placement papers and interview questions

INFOSYS PAPER

2012-02-22T11:33:00.000-08:00

1.A mathematician was 70 in the year 500 and he was 80 in the year 490.find the year in which he was born

ans :570 b.c

2.There are 100 pieces of zigzags(don t bother of zig zag) which can be combined two at a time dicretely or with with a unit of some zigzag. How many such copmbination are necessary to make asingle whole unit.

ans :99 (Similar to the problem that says: 10 players playng mathes one lose will make them out of tournament)

3.a.) there is a cube which is painted out side ,which is then divided into 125 cubes of equal size.Find the number of cubes which are having color at the 3 faces ,number of cubes having color at 2 faces and also at the one face,also cubes having no color

ans:(3 faces=8
2 faces=36, 1 faces=54 ,no colr=27 )

3.b) if these cubes r placed in the tray and shuffelled then brougt into stationary state the find the probality that the red face is pointing above

ans: 1/5 or 0.2.

4.) There are 729 balls of equal size and shape out of which one is heavier than rest all.Find the minimum number of weighing tha are required to find out that faulty ball

ans (12).

5.)In an iceland there are 3 kinds of persons Sarrorian: one who speaks both the sentence truth another
fellow meditorian: who speakes one truth sentence and one false sentence.the lask kind of person is
nerrorian :who speakes both the sentence the sentence false.Balachandra meets each one of them and comes with the following sentence frm them and frm these sentence Balachandra is able to tell who is Sarrorian,Meditorian,narrorian

Gowda : I am sarrorian
: Satish is Narrorian

putta: I am Sarrorian
: Santosh is Meditorian

betta: I am Sarrorian
: Gowda is Meditorian

ANS: betta: Sarrorian
Gowda : Meditorian
putta : Narrorian

6.) CRAZY FROG

A frog is in the well of 30 meters depth.It wants to come out of it .It covers 3 meters during day and slips by 2 meters during night.How many days it requires to come out of it

ans ( Total of 28 days and 27 nightg so 27 days it needs).

Latest Infosys Puzzles

2012-02-22T11:32:00.003-08:00

403. During a Pizza buffet where A eats more times 2.4 than B, and B eats 6 times
less than C.find the leat number of times all the three has to eat.

404. Last Year my cousin came to my place and we played a game where the loosing one has to give one choclate to the person who won the game .At the end of the vacation,i.e the day my cousin was leaving she counted number of games that i won an she won.At last she gave me a total of 8 choclates even though she won about 12 games.
Find the mumber of games that we played.

405. A tree on first day grows 1/2 of its size second day 1/3rd of its size on the previous day similarly than 1/4th and so on.u have to calculate after how many days the tree will be 100 times of its original size.
ans -198 days

406. three person are there let A B C one always tell truth one always lie and one sometimes tell truth
they are standing in straight line the first person who is seniormost and always tells truth tells in middle A is standing the middle one says C is in the third position the last one says B is in second position ie middle

407. A,B,C,Dand E are juniors and F,G,H,I are seniors you have to make three groups each containg three person such that in each group one senior is there and some other conditions which i cant recall exactly but was like that if this person will be in group than this cant be in the same group .

408. there are 100 teams in a football knockout tournament how many mathces should be held to get the winner answer is 99 ie one less than the no of teams bcoz in every match on team goes out

409.A car traveling with uniform speed. There r 15 poles. A car travel from 1 to 10th pole in 10 seconds. the poles are equally spaced. then how many seconds it takes to reach the 15th pole? (4)

410. A boy jump to the river from the bridge. He swim opposite direction of the stream.
After 1000 yards he noted that his hat was fallen at the bridge. The he goes to take the hat. He didn’t change his speed.What is the velocity of stream? (4)

411. Uncles A bought a Hat & Suit for Rs.15.Aunty B bought a Suit with as much as cost of uncle’s Hat. Then reaming cost
he bought Dresses. Dresses cost is one rupee more than his hat’s cost. Then she told him his hat’s hat is 1 and ½ cost of
her hat. They spend equal amount on their purchase .
a. Then uncle said how much is the cost of Hat.
b. How much they spend altogether ? (4)

412. There are 17 brown ties,13 red ties, 9 green ties, 5 blue ties and 2 white ties.Then a man takes a tie.
so, how many times he at least take tie to get the 2 ties In same colour? (6)

413. Mrs. Barbinger bought some plates on Saturday for $1.30, when everything was being sold two cents below the regular price. She exchanged those plates on Monday, at their regular price, for cups & saucers.
Cost of one plate equals cost of one plate & one saucer. She returned home with 16 more articles than before. Since, saucers cost only 3 cents each, she bought 10 more saucers than cups.
The puzzle is, how many cups could she have bought on Saturday, for $1.30?

ANS.: 13 cups
*******************************************************
On Monday:
cup = 12 cents, saucer = 3 cents, plate = 15 cents
On Saturday:
cup = 10 cents, saucer = 1 cent, plate = 13 cents
*******************************************************

414. Mr and Mrs ABC purchase suit and hats for 15 Rs. then from remaining money Mrs. ABC purchase A dress. She shaid " My dress cost is more than 1 Rs from your hat's cost.
she also added "if we divide our money and then purchase and cost of my hat is 3 and 1/2 times yours hat then we had spend equal money"
a. " if that " condition fallows what is price of his hat?
b. Total amount spend ?
ans. hat= 6 Rs , Total = 22 Rs. ( not sure)

415. My rack contains 8 Red colour ties, 13 violate colour ties,10 Blue colour ties, 5 Pink colour ties, 4 green colour ties. If electricity gone and i want at least two ties of same colour then how many ties i should take out from my rack?
Ans : 6 ties.

416. Two trains leaving from two station 50 miles away from each other with costant speed of 60 miles per hour, approaches towards each other on diffrent tracks. if lenght of each train is 1/6 mile. when they meet How much time they need to pass each other totally?
ANS : 10 sec. ( not sure)

417. All handsome, fair skinned, muscular, lean, employed, and rich men are tall.
All handsome men are fair skinned.
Some muscular men are handsome.
Some muscular men are not fair skinned.
All lean men are muscular.
No lean man is handsome.
No fair skinned man who is not handsome is rich.
All tall men who are neither fair skinned nor muscular are employed.

1. pramod is not fair skinned. Which of the following must be true ?
a) pramod is employed
b) if pramod is muscular, he is neither handsome nor lean
c) if pramod is tall, he is employed or muscular.
d) if pramod is not employed, he is muscular.
e) if pramod is tall, he may be muscular or handsome, but not both.
2. which must be false if the information given is true ?
a) no lean men are fair skinned.
b) some fair skinned are lean.
c) some rich men are both fair skinned and muscular.
d) some tall men are neither fair skinned nor employed
e) some rich men are lean
3. which of the following can be deduced from the information given ?
a) all rich men are handsome
b) some rich men are handsome
c) some rich men are employed
d) some rich men are muscular
e) all rich men are handsome, muscular, or employed
4. which cannot be shown to be true or false on the basis of the information given ?
I. No fair skinned or muscular man is employed
II. Some muscular men are fair skinned but not handsome
III. No fair skinned man both handsome and lean

a) I only b) II only c) III only d) I and II e) II and III

418 In Mulund, the shoe store is closed every Monday, the boutique is closed every Tuesday, the grocery store is closed every Thursday and the bank is open only on Monday, Wednesday and Friday. Everything is closed on Sunday.
One day A, B, C and D went shopping together, each with a different place to go. They made the following statements:

A D and I wanted to go earlier in the week but there wasn’t day when we could both take care of our errands.
B I did not want to come today but tomorrow I will not be able to do what I want to do.
C I could have gone yesterday or the day before just as well as today.
D Either yesterday or tomorrow would have suited me.

Which place did each person visit ?

419 The Novice hockey tournaments are on for beginners. Just three teams are in the league, and each plays the other two teams just once. Only part of the information appears in the result chart, which is given below.
Team Games Won Lost Tied Goals For Goals against
A 2 1 0
B 2 1 1 2
C 2

The scoring pattern in the tournament is as follows:

Two points are awarded to the winning team. In case of a tie, both teams are awarded one point, so the total points in the standings should always equal the total number of games played ( since each game played is counted as one for each of the two participating teams). Of course, total goals scored for and goals scored against must be the same, since every goal scored for one team is scored against another.
The games are played in the following order: Game 1: A Vs B; Game 2: A Vs C; Game B Vs C
Can you determine the score of each of the above games ?

420 A recent murder case centered around the six men, clam, flip, gront, herm, mast, and walt. In one order or another these man were the victim, the murderer, the witness, the police, the judge, and the hangman. The facts of the case were simple. The victim had died instantly from the effect of gunshot wound inflicted a shot. After a lengthy trial the murderer was convicted, sentenced to death, and hanged.

V Mast knew both the victim and the murderer.
v In court the judge asked clam his account of the shooting.
V Walt was the last of the six to see flip alive.
V The police testified that he picked up gront near the place where the body was found.
V Herm and walt never met.
What role did each of the following play in this melodrama ?
a) Murderer
b) Victim
c) Judge
d) Witness

421.A alone can do a work in 6 days B alone can do in 8 days with help of c they finished the work in 3 days.If the agreed sum is 640 what is the share of c.(refer r.s agarwal)

422) A boy goes to school from his house.on one fourth oh his way to school,
he crosses a machinery station. And on one third of his way to school, he crosses a Railway station. He crossed the machinery station at 7:30 and he crosses the Railway station at 7:35. When does he leave the house & when does he reach the school ? (5M)

423.A drives a car four times a lap 10,20 30,60 kmph what is the average speed.

424.speed of boat in still water 10 km,if speed up stream is 24 km and speed down stream is 16 what is speed of the river.

425.If grand father age is sum all the three grand childern whos age r in equal interval what is the age of the grand father?

426.In a grass field if 40 cow could eat for 40 days.The same grass field can feed 30 cows for 60 days.how long
will it feed 20 cows?

427) An Eraser, Pencil, Notebook together costs $1.00. Notebook costs more than the cost of 2 Pencils. 3 Pencil costs more than 4 Erasers. 3 Erasers costs more than a Notebook.
How much does a pencil costs? (5M)

428) Four persons A,B,C,D were there. All were of different weights. All Four gave a
statement.Among the four statements only the person who is lightest in weight of all
others gave a true statement.

A Says : B is heavier than D.
B Says : A is heavier than C.
C Says : I am heavier than D.
D Says : C is heavier than B.
Find the lightest & List the persons in ascending order according to their weights. (5M)

428. A man was travelling to a place 30 miles away from starting point. he was speeding at 60 miles/hr. but when he came back, his car got breakdown and half an hour was wasted in reparing that. altogether he took 1 hr for return journey. Find the avg. speed of the whole journey.

429.I'M NOT VERY SURE REGARDING THIS QUESTION.
A detective was assigned to generate a code using 4 digits, so that no one could break it. he knew that if the code starts with 0,5 or 7 it will be cracked. so how many numbers can be formed using 4 digits.

430. A cow was standing on a bridge, 5feet away from the middle of the bridge. suddenly a lightning express with 90 miles/hr was coming towards the bridge from nearest end of the cow.seeeing this the cow ran towards the express and managed to escape when the train is one feet away from the bridge. if it would have ran to opposite direction(ie away from train) it would have been hit the train one ft away from the end of the bridge. Calculate the length of bridge.

Latest Sample Placement Paper Of Infosys

2012-02-22T11:31:00.003-08:00

Directions (Q. 1-7): In each of the following sentences there are two blank spaces. Below each sentence there are five pairs of words denoted by numbers 1), 2), 3), 4) and 5). Find out which pair of words can be filled up in the blanks in the same sequence to make it meaningfully complete.

1. A nation that loses the _______ of honesty loses its __________.
1) power, will
2) appeal, charisma
3) dictum, ground
4) stamina, courage
5) virtue, soul

2. If one gets rid of the government officials and politicians from the _____ of economic activities, corruption will be _____.
1) hub, balanced
2) nexus, reprimanded
3) gear, eliminated
4) genre, alleviated
5) sphere, reduced

3. The principal aim of a socialist state is to ____ _______ in income and status and standards of life.
1) abolish, poverty
2) curb, menace
3) eliminate, inequality
4) check, gulf
5) minimise, standards

4. To fight natural calamities wisdom requires that we ________ crises and _______ for them.
1) apprehend, tackle
2) anticipate, prepare
3) hamper, secure
4) address, evolve
5) sense, deviate

5. This collection of essays has _________ beyond the traditional ______ of a versatile economist.
1) ventured, domain
2) marked, line
3) performed, performance
4) sold, copyright
5) held, charisma

6. It is quite true that when the whole economy is in ________, raising the rate of interest has other ________.
1) seize, burdens
2) shambles, dimensions
3) jeopardy, glimpse
4) distress, implications
5) swing, justification

7. In a democracy, it is essential that ______ voices on one extreme or the other should exist as part of the system of checks and _____.
1) concerned, pressure
2) dissenting, balances
3) confronting, pranks
4) opposition, whims
5) eager, fancies

Directions (Q. 8-13): Study the following table and answer accordingly: The following table shows the marks obtained by six students in six different subjects.

Stu./Sub.	History(100)	Maths(200)	English(150)	Biology(150)	Econo.(100)	Hindi(150)
Ankit	62	162	113	30	75	90
Sana	59	118	103	38	72	107
Ramar	54	173	97	26	79	105
Sumantra	69	106	100	36	68	118
Joseph	68	109	109	32	75	113
Sharbani	72	143	76	40	64	103

8. Which two students have got equal marks in all subjects together?
1) Ankit-Joseph
2) Joseph- Ramar
3) Sana- Sumantro
4) Sana- Sharbani
5) Ankit-Sharbani

9. What is the approximate ratio between the sum of percentages of marks obtained by Ramar in History and Hindi and percentage marks obtained by Sharbani in Maths?
1) 7:4
2) 4:7
3) 7:5
4) 8:5
5) 5:9

10. Percentage of marks obtained by Sumantro in Economics is what percent more/less as a percentage of the percentage marks obtained by Ankit in Maths?
1) 15%
2) 10%
3) 13%
4) 19%
5) 23%

11. Percentage of marks obtained by Joseph in all subjects together is
1) 63.43%
2) 67.46%
3) 70.43
4) 60.59%
5) 73.43%

12. The marks obtained by Sumantro in Hindi is what per cent more than the marks obtained Sana is English?
1) 12.34%
2) 10.87%
3) 14.56%
4) 16.43%
5) 17.89%

13. What should come in place of question mark (?) in the following equation?
13 + 5 - ? = 14
1)4
2)4
3)4
4)5
5) None of these

Directions (Q. 14-25): In the following passage there are blanks, each of which has been numbered. These numbers are printed below the passage and against each five words are suggested, one of which fits the blank appropriately. Find out the appropriate words.
The earth is not only the 51 heritage of all humankind but also the ultimate 52 of life. By over-exploiting its 53 we are 54 the very 55 of our own life. All around signs 56 of the destruction 57 by human activity and of the 58 of nature. Therefore, the protection and 59 of the earth is not a question of morality or ethics but a question of own 60 . How we 61 to this challenge will 62 not only this generation but many generations to come.
14.
1) cultural
2) common
3) historical
4) established
5) initial

15.
1) destiny
2) sparkle
3) principle
4) source
5) goal

16.
1) burden
2) capacity
3) resources
4) nature
5) reserves

17.
1) undermining
2) stressing
3) forcing
4) seeking
5) evading

18.
1) hope
2) basis
3) unity
4) solidarity
5) growth

19.
1) compete
2) glitter
3) stages
4) marvel
5) abound

20.
1) caused
2) unfold
3) negligence
4) unfolded
5) highlighted

21.
1) casualty
2) abuse
3) load
4) degradation
5) harshness

22.
1) infrastructure
2) respect
3) conservation
4) beautification
5) generation

23.
1) doom
2) survival
3) rationality
4) prestige
5) intelligence

24.
1) cater
2) forward
3) confront
4) tolerate
5) respond

25.
1) review
2) reprimand
3) engulf
4) affect
5) deprive

ANSWERS : 1. (5) 2. (5) 3. (3) 4. (2) 5. (1) 6. (4) 7. (2) 8. (3) 9. (1) 10. (4) 11. (2) 12. (3) 13.(3) 14. (2) 15. (4) 16. (3) 17. (1) 18. (2) 19. (5) 20. (1)
21. (4) 22. (3) 23. (2) 24. (5) 25. (4)

IBM Placement Paper 15 March 2011 at Hyderabad

2012-02-22T11:30:00.005-08:00

IBM Placement Paper 15 March 2011 at Hyderabad

IBM India Private Limited Placement Papers
First is the Wrtten Test
GD
Technical Interveiw
HR

The process is very simple. IBM peoples are very sopportive. RS agarwal is good to study for written round.

I am an Electronics and Communication students basics off C and C++ is must dont get afraid only basics is enough even I don't know how to write programs. be confident have faith in God...

The pattern was :
Section 1 : Matrix Test : 15 ques – 13 min [No negative marks for this section]
Section 2 : Number Series Test : 20 ques – 4 min & 15 mins Mathematical [Negative marking(1/4) is there for this section]
Section 3 : Analytical type (Apti) : 12 ques – 15 min. [Negative marking (1/4) is there for this section]

WRITTEN TEST :
This is the new pattern of IBM. This new pattern has been implemented. It contains 3 sections.

SECTION 1
Some information is given in the form of matrices, with headings for rows as row1, row2…. Etc. For columns with headings as column1, column 2…. Etc.those matrices are as follows.

Column1 column2 column3 column4
Row1 @ * 2 Z
Row2 S K ? $
Row3 I P Z +
Row4 # 8 F Q

Questions are as follows (not same questions but same type)

1. If column1, Column 4 are interchanged and row3, row4 are interchanged and diagonal elements from top left to bottom right are written in reverse order then what is the element in row1 and column 1?

2. If Z’s in odd numbered rows are replced with 7’s and S’s in odd numbered columns are replaced with 5’s then which column elements sum equals to 9?

3. After giving similar type of conditions, what is the element left to H? In this section they gave around 4 matrices of this type and gave some questions for each matrix.

Total No. of Questions are 15. these are multiple choice questions. 5 answers were given for each question.
No negative marks for this section. Time Limit is 13 minutes.

SECTION 2
All questions in this section are from number series. Total number of questions are 20. Time limit is 4 minutes. These are also multiple choice questions (5 options). Negative marking(1/4) is there for this section.

2. NUMBER SERIES (20 qs - 4 mins - 20 marks - negative 1/4) simple but we should be very quick.. time is very very very important 4 this section. dont get confused really very simple section and 1 more thing is the invigilaor signals time 4 every 30 secs dont feel tense with that just go with your work..
EX: 17, 18, 19, 34, 35, 19, 20,___
Ans....21
EX: 22, 21, 34, 33, 45,____
Ans......44
EX: 40, 41, 41, 42, 42, 42, 44, 44,____
Ans.....44
here usually two number series will be mixed.. very easy but should identify it

SECTION 3 : Analytical type Questions
This secton is little bit tough. You must have practice to do this section. questions 12, time 15 minutes. Negative marking(1/4) is there for this section.

1. If a company produces 15 different model of tv sets, 2 inchs screen and 4 different model of 4 inch screen size then how many model should vendor has for all the model.

2. If a team consists 20 members in which 20% are mathematician then how many member should they hire so that the ratio would become 10/11.

3. The rate of color toner increases $33 to $35 and rate of black&white toner increases $28 to $29 if company spend $1540 in which 3/5 is color toner how much is total expenditure.

4. A computer shop consists 3 brand’s laptop. Laptop of brand A is sold 3/16, B is sold 1/16 and C is sold ? then what fraction is sold by the shop in all.
Ans 1/16

5. Printer A prints 8192 character per min and printer B prints 13862 character per min. four character are equal to one word. Printer A starts at 7:15 am while Printer B starts at 7:29 am then at what time both will have same no of words printed?

6. In a library there are 5 cluster and each is having 44 books (module). In first week 75 books are used, in second 95, in third 95 and in fourth 160 books are used.then tell how much fraction of books are used ?

7. We have 171 kg rice custing 7 rs/kg. We have rice at 11 rs/kg and 2 rs/kg. then after mixing 11 rs/kg and 2 rs/kg rice. What is quantity of 11 rs/kg rice ..
Ans: 76.00

8. Rectangular room has width half of its length. When 6 is decreased from both length and width then its area is differed by 108 so find the width ?
Ans : l =8
W=4
9 rectangular room has width twice of its length. When 6 is decreased from both length and width then its area is differed by 108 so find the width.
L=4
W=8

9. advantages of RDBMS over simple custom DBMS ?

10. Which layer of an OS takes care of the system resource usage at the lowest level ?

11. advantages of stored procedures ?

HR Round:-

1. Written Aptitude Test,
2. Group Discussion Round,
3. Technical Interview, and
4. HR Interview.

IBM WRITTEN TEST PAPER ON 10th OCTOBER AT BANGALORE

2012-02-22T11:30:00.002-08:00

IBM WRITTEN TEST PAPER ON 10th May 2011 AT BANGALORE

1. If a company produces 15 different model of tv sets of 2 inchs screen and 4 different model of 4 inches screen size. Then how many model should vendor has for all the model so that all models will displayed in the showroom

2. If a team consists 20 members in which 20% are mathematician then how many member should they hire sothat the ratio would become 10/11. (Similar Question) 20% of 30 professional r mathematician how many mathematician it should hire so the ratio vll become 10/11

3. The rate of color toner increases $33 to $35 and rate of black&white toner increases $28 to $29. If company spends $1540 in which 3/5 is color toner then how much is total expenditure increases after the cost hike.

4. A computer shop consists 3 brand’s alptop .Laptop of brand A is sold 3/16, B is sold 1/16 and c is sold 3/4 then what fraction is sold by the shop in all.

5. Printer A prints 8192 character per min and printer B
prints 13862 character per min four character are equal to one word. Printer A starts at 7:15 am while Printer B starts at 7:29 am then at what time both will have same no of words printed.

6. In a library there are 5 cluster and each is having 44 books(module). In first weak 75 books are used, in second 95, in third 95 and in fourth 160 books are used.then tell how much fraction of books are used.

7. We have 171 kg rice custing 7 rs/kg.we have rice at 11 rs/kg and 2 rs/kg .then after mixing 11 rs/kg and 2 rs/kg rice. What is quantity of 11 rs/kg rice.

8. Rectangular room has width half of its length. When 6 is decreased from both length and width then its area is differed by 108 so find the width.

9. Company A taken a truck on rent of $1280 per month another company B bought the truck in $40000 and send $120 per month. After 4 years what will be the difference in the amount spent by the both companies on the TRUCK.

10. In a company printing work is done by two machine 5% of the work done by machine A are wasted , and 40% of work done by machine B are wasted. if the 80% of the total work is done by machine A. then what is the total percentage of
wastage.

IBM 2011 Placement Paper -Technical Questions 6th March at Chennai

2012-02-22T11:29:00.005-08:00

IBM 2011 Placement Paper -Technical Questions 6th March at Chennai

1. Area of trapezium?
2. if a person moves 15km straight and turns 45km right and moves 15km straight then how much distance he needs to walk to reach starting point?
3. if pqrstu implies qrstuv then abcdefg implies what?
4. There are 30 cans and out of them only one is poisoned. If a person tastes very little he will die within 14 hours so if there are mice to test and 24 hours, how many mice are required to find the poisoned can?
5. if a and b are mixed in 3:5 ration and b,c are mixed in 8:5 ration if the final mixture is 35 litres,find the amount of b in the final mixture.

6. 1!+2!+….50!=?
7. Two pipes A and B fill at a certain rate. B is filled at 10,20,40,80 (10 in 1 hour, 20 in 2 hours, 40 in 3 hours and so on). If 1/16 of B if filled in 17 hours what time it will take to get completely filled.
8. In a shopping mall with a staff of 5 members the average age is 45 years. After 5 years a person joined them and the average age is again 45 years. What’s the age of 6th person?
9. Find (4x+2y)/ (4x-2y) if x/2y=2
10. Find average speed if a man travels at speed of 24kmph up and 36kmph down at an altitude of 200m. Formula is 2xy/(x+y)1. Area of trapezium?
11. Image of point (3,8) in the line x + 3y = 7 is
12. if a person moves 15km straight and turns 45km right and moves 15km straight then how much distance he needs to walk to reach starting point?
13. if pqrstu implies qrstuv then abcdefg implies what?
14. There are 30 cans and out of them only one is poisoned. If a person tastes very little he will die within 14 hours so if there are mice to test and 24 hours, how many mice are required to find the poisoned can?
15. if a and b are mixed in 3:5 ration and b,c are mixed in 8:5 ration if the final mixture is 35 litres,find the amount of b in the final mixture.
16. 1!+2!+….50!=?
17. Two pipes A and B fill at a certain rate. B is filled at 10,20,40,80 (10 in 1 hour, 20 in 2 hours, 40 in 3 hours and so on). If 1/16 of B if filled in 17 hours what time it will take to get completely filled.
18. In a shopping mall with a staff of 5 members the average age is 45 years. After 5 years a person joined them and the average age is again 45 years. What’s the age of 6th person?
19. Find (4x+2y)/ (4x-2y) if x/2y=2
20. Find average speed if a man travels at speed of 24kmph up and 36kmph down at an altitude of 200m. Formula is 2xy/(x+y)

IBM Placement Paper - Reasoning Test held Mumbai on 3rd Feb 2011

2012-02-22T11:29:00.002-08:00

IBM Placement Paper - Reasoning Test held Mumbai on 3rd Feb 2011

1.Given below are five sentences, ie A), B), C), D) and E). Arrange them in proper order so as to form a meaningful paragraph and then answer the following questions.
A) It assumes incorrectly that the amount of business activity in an economy is fixed.
B) Since that time, productivity in agriculture has increased tremendously.
C) It is tempting to conclude that if productivity increases, then employment must go down.
D) In fact, if workers are available, entrepreneurs can match them with new business ideas and investment capital and thus increase the total amount of business activity in an economy.
E) After all, 200 years ago virtually all people who could work worked in agriculture.

2. Which sentence will come at 'second' place in the paragraph?
1) A
2) B
3) C
4) D
5) E

3. Which sentence will come at 'last' place in the paragraph?
1) E
2) D
3) C
4) B
5) A

4. Which will be the 'first' sentence in the paragraph?
1) A
2) B
3) C
4) D
5) E

5. Which will be the 'fourth' sentence in the paragraph?
1) E
2) D
3) C
4) B
5) A

6. Which sentence will come at 'third' place in the paragraph?
1) B
2) D
3) A
4) E
5) C

TCS-Paper-Candidate-Experiences-Technocrates-Institute-of-Technology-15-January-2011,Bhopal

2012-02-22T11:28:00.002-08:00

Hello friends, I am Mahesh from Electronics, Technocrates Institute of technology, Bhopal.

We had TCS recruitment process on 15th of January 2011 at our college. I would like to share my experience.

Nearly 500 appeared for Aptitude. We were made in 4 groups and sent for Touchstone online exam.Most of the questions were from online demo papers and previous question papers with changes in data. We have to answer 35 in 80 minutes (enough time!). There was no upper cutoff but lower cutoff was around 22 (but it was rumored that we had lower and upper cut off of 18 and 27 respectively before the test , so many of us answered for 27). At 4pm in evening they announced third round results and I was one of them in selected candidates.

Around 250 made into next rounds. Many of us who had answered for 27 or less did not get through. So answer for 30 or more. Sometimes they check exactness of your answers as well.

I had answered for 31.

The second round was mix of Technical and HR. I had technical round at 7.30pm. Me and my friend was asked to sit in front of a Technical person. Initially I greeted him and sat but made a BIG mistake! I greeted ‘good morning’ at 7.30pm! then I realized and corrected ( never make this mistake coz it shows your presence of mind).

Technical: Tell me about yourself?

Me: told .

Technical: Tell me software development cycles?

Me: Didn’t know the answer. Told I don’t know

Technical: What are the subjects you had in first year?

Me: Told..like physics,C,Electronics,Basics of mechanical,Civil…

Technical: Then he asked me to tell the differences between 4 stroke and 2 stroke engine

Me: I hadn’t remembered so told I don’t know. Asked the same questions to my friend.

Technical: What is stress?

Me: told ( it took some time to regain the concept and told in broken concepts)

Technical: what is pressure?

Me: told ( he did not check my resume atleast! Asked his own questions!)

Technical: Tell me about your project work?

Me: till now I had bad interview after this I thought this would be my last chance to impress him. I had started my project work recently so I was pretty confident of answering this. So answered how I started, how I am moving and Implementation ( Remember tell them implementation of your project properly. Even if you have not started your project work know some ideas and learn its implementation part. They don’t go in depth.)

Technical: ok you can leave.

Me : Left….

This person was not cordial.He did not check any of us resume and certificates. But keep

yourself cool and answer without hesitating. Even if you make mistakes don’t worry answer

for his questions with good pitch of voice.

Candidates who were good at technical were directly selected and were told to wait for

results and the candidates who were not selected were also told the same (to one of my

friends, panelists asked to collect his call letter right after the interview). For those who had normal technical skills were sent to HR round. I was sent to the HR round and that HR was very nice and cordial. He set us, up as a group of 10 and asked one of the candidates to interview the other in chain manner( suppose I will interview one and in the next turn he will interview me). In this round he will check communication skills and confidence level.

Answer in bit louder voice. Questions depends on your friend! So after my turn I was

asked to wait for results.

Latest TCS Fresher Job Interview Paper Pattern: 31-Mar-2011 at kochhi

2012-02-22T11:27:00.002-08:00

Latest TCS Fresher Job Interview Paper Pattern: 31-Mar-2011

Company Name : Tata Elxsi

Type : Fresher

Job Interview, Question Paper:

Hi it started off with a aptitude test. Aptitude is divided into 3 sections

Verbal: Which includes simple articles and comprehensions for 30 marks

Logical & Questions: More of logical questions quite simple and questions include venn diagram sums, ratio sums and few simple questions for 30 marks

Technical: Since i am from CSE our technical includes majority of the questions from Microprocessor. And few questions from Operating System, And very few from C, OOPs for 30 marks. Totally 90 marks, they have some cut off. If you are above the cut off you'll be sent to direct HR without a technical interview . If you are somewhere near to the cut off, you are suppose to attend the Technical HR I attended the Technical HR

The Questions Were:

What is a linked list?

What is the Diff between Struct & Array?

Create a LL using Struct.

OSI reference layers in n/w & their functionality

Scheduling algorithms in OS

Recursive functions

Pointers and their implementation

Programme for reversing a String

It was about 30 mins long

I was selected for HR

First thing he'll asking is tell me about yourself. Will ask something about current events...

not to check your GK to check your communication abilities. tell about your family. He gave a news paper and asked me to read aloud, it was t check my diction, pronunciation, etc

Google placement paper -1

2012-02-22T11:26:00.003-08:00

Q1)
What is the value of i after execution of the following program.
void main()
{
long l=1024;
int i=1;
while(l>=1)
{ l=l/2;
i=i+1;
}
}
a)8 b)11 c)10 d)100 ans:b
Q2)
This question is based on the complexity ...
Q3)
s->AB
A->a
B->bbA
Which one is false for above grammar..
Q3)

Some Tree were given & the question is to fine reorder traversal.
Q4)
One c++ program,to find output of the program..
Q5)
If the mean failure hour is 10,000 and 20 is the mean repair hour.If the printer is used by
100 customer,then find the availability.
1)80% 2)90% 3)98% 4)99.8% 5)100%
Q6)One question on probability...
Q7)In a singly linked list if there is a pointer S on the first element and pointer L is on the last element.Then which operation will take more time based on the length of the list.
1)Adding element at the first.
2)adding element at the end of the list.
3)To exchange the first 2 element.
4)Deleting the element from the end of the list.
ans:2 check it!
3 more question to fine the output of the program.
and rest of the question was based on data structure,
some condition where given and we have to conclude either y or n
The second section was coding...
1)Write a function to multiply 2 N*N matrix
Write test cases for our code.
2)S contains the set of positive integer.Find the largest number c such that c=a+b where a,b,c are district number of the set.

Google Placement Paper on 17th March 2011 at Hyderabad

2012-02-22T11:26:00.000-08:00

Google Placement Paper on 17th March 2011 at Hyderabad

1. If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and sells it for Rs.15, then what is the percentage of gain?

2. Pipe A can fill a tank in 30 mins and Pipe B can fill it in 28 mins.If 3/4th of the tank is filled by Pipe B alone and both are opened, how much time is required by both the pipes to fill the tank completely ?

3. If on an item a company gives 25% discount, they earn 25% profit. If they now give 10% discount then what is the profit percentage.
(a) 40% (b) 55% (c) 35% (d) 30%
(Ans. D)

4. A certain number of men can finish a piece of work in 10 days. If however there were 10 men less it will take 10 days more for the work to be finished. How many men were there originally?
(a) 110 men (b) 130 men (c) 100 men (d) none of these
(Ans. A)

5. In simple interest what sum amounts of Rs.1120/- in 4 years and Rs.1200/- in 5 years ?
(a) Rs. 500 (b) Rs. 600 (c) Rs. 800 (d) Rs. 900
(Ans. C)

6. If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself.
a) 6 (b) 8 (c) 10 (d) 12
(Ans A)

7. Two trains move in the same direction at 50 kmph and 32 kmph respectively. A man in the slower train observes the 15 seconds elapse before the faster train completely passes by him. What is the length of faster train ?
(a) 100m (b) 75m (c) 120m (d) 50m
(Ans B)

8. How many mashes are there in 1 squrare meter of wire gauge if each mesh
is 8mm long and 5mm wide ?
(a) 2500 (b) 25000 (c) 250 (d) 250000
(Ans B)

9. The price of sugar increases by 20%, by what % should a housewife reduce the consumption of sugar so that expenditure on sugar can be same as before ?
(a) 15% (b) 16.66% (c) 12% (d) 9%
(Ans B)

10. A man spends half of his salary on household expenses, 1/4th for rent, 1/5th for travel expenses, the man deposits the rest in a bank. If his monthly deposits in the bank amount 50, what is his monthly salary ?
(a) Rs.500 (b) Rs.1500 (c) Rs.1000 (d) Rs. 900
(Ans C)

Technical :-

Q1) What is the value of i after execution of the following program.

void main()
{
long l=1024;
int i=1;
while(l>=1)
{
l=l/2;
i=i+1;
}
}

a)8 b)11 c)10 d)100 ans:b

Q2)This question is based on the complexity ...

Q3)s->AB
A->a
B->bbA
Which one is false for above grammer..

Q4)Some Tree were given & the question is to fine preorder traversal.

Q5)One c++ program,to find output of the program..

Q6)If the mean faliure hour is 10,000 and 20 is the mean repair hour.If the printer is used by 100 customer,then find the availability.

1)80% 2)90% 3)98% 4)99.8% 5)100%

Q7)One question on probability...

Q8)In a singly linked list if there is a pointer S on the first element and pointer L is on the last element.Then which operation will take more time based on the lenght of the list.

1)Adding element at the first.

2)adding element at the end of the list.

3)To exchange the fisrt 2 element.

4)Deleting the element from the end of the list.

ans:2 check it!

3 more question to fine the output of the program.

and rest of the question was based on data structure,

some condition where given and we have to conlude either y or n

The second section was coding...

1)Write a fucntion to multiply 2 N*N matrix

Write test cases for ur code.

2)S contains the set of positive integer.Find the largest number c such that c=a+b where a,b,c are distict number of the set.

YAHOO PLACEMENT SAMPLE PAPER

2012-02-22T11:25:00.002-08:00

YAHOO PLACEMENT SAMPLE PAPER

Few Questions: (45 min)
1. In a village in each family they give birth to children till they
get a boy. IF girl child they try again. What is the ratio of boys to
girls.

2. 2n+1 numbers in a list except for 1 num all had duplicates, how to
find duplicate in O(n)

3. In 1000 wine bottles stack 10 are poisoned given 10 rats what is
the minimum number of tries to find the poisoned one. Rat dies once it
licks the poisoned wine.

4. Write 1,3,6,4 using +,-,*,/ to get 24 (no repeat of numbers)

5. Which is the DS used in dictionary mode in mobile (t9)

6. Which is DS used for chess program...to predict move each and every
time..

7. There are $1070 dollars how to split them into bags such that asked
for any denomination from $1 to $1070 , u must b able to give without
opening bag...

If any one has idea do mail me qrio.qrio at gmail.com (qrio dot qrio
at gmail dot com).. Eagerly waiting...

Another paper:
1. First fit issues...

2. Algorithm to partition set of numbers into two s.t. diff bw their
sum is min and they hav equal num of elements

3. Prog: given Numerator & Denominator.... print 0.3333333333 as .(3)
0.123123 as .(123)

Latest Sample Yahoo Placement Paper - I

2012-02-22T11:24:00.002-08:00

Latest Sample Yahoo Placement Paper - I

Aptitude and Computer Awareness
No Negative Marking.45 minutes to complete the test. Do not write anything on question paper.

Directions for Questions Nos: 22 to 23
Kya-Kya is an island in the south pacific .The inhabitants of Kya-Kya always Answer any question with two sentences, one of which is always true and other is always false.

22) You are walking on a road and come to a fork. You ask the inhabitants Ram, Laxman, Lila,”Which road will take me to the village?”
Ram says,”I never speak to strangers. I am new to this place”
Laxman says,”I am married to Lila. Take the left road”.
Lila says,”I am married to ram. He is not new to this place”
Which of the following is true?
A) Left road takes you to the village
B) Right road takes you to the village
C) Lila is married to laxman
D) None of above
Ans. A.

Ram said he never talked to strangers, but he spoke to a stranger, this meAns that this statement is false, hence his other statement must be true, hence the second statement of Lila is false, hence her first statement is true that is she is married to ram, hence the first statement of Laxman is false, hence his second statement is true, that is take the left road.

23) You find that your boat is stolen.You question three inhabitants of the island and they reply as follows:
John says,”I didn't do it. Mathew didn't do it”
Matthew says,”I didn't do it. Krishna didn't do it.”
Krishna says,”I didn't do it .I don't know who did it.”
Who stole your boat?
A) John
B) Matthew
C) Krishna
D) None of them.
Ans. B

Matthew said he didn't know who did it, but he also said he didn't do it, which meAns he knows who did it, which meAns his second statement is false, which meAns his first statement is true…
Directions for question nos 24-25: There are five trains A, B, C, D and E that run between the following stations:
Bombay and Pune
Calcutta and Bombay
Pune and Goa
Goa and Bombay
Pune and Calcutta
Trains A and D do not go to Bombay, B&C do not go to Calcutta and C & D do not touch Goa.

24) Train E goes from………… to………… and vice-versa

A.Pune and Calcutta
B.Bombay to Goa
C.Bombay to Calcutta
D.Goa to Pune.
Ans. C

25) Which train runs between Calcutta and Pune?
A) A
B) B
C) C
D) D
Ans. D

COMPUTER AWARENESS

26) The device that can trAnsform digital data into analog data is called a
a)trAnsformer
b)network
c)carrier
d)modem
Ans. d

27) Following is true about the IP of a machine
a) It is 48-bit and will always be unique around the world.
b) It is 48-bit and is not necessarily be unique around the world.
c) It is 32-bit and will always be unique around the world.
d) It is 32-bit and is not necessarily be unique around the world.
Ans. c

28) A machine having 64MB memory runs a executable which is 300MB on disk. This is achieved by:
a) Use of FAR pointers
b) Page swapping.
c) Save some variables on another machine on network.
d.) Cannot be run on the machine.
Ans. b

29) Which of the following is true about thread and process startup speed:
a.) The startup of a thread is faster than a process.
b.) The process startup is faster as it is directly controlled by the OS.
c.) They will be equal.
d.) Depends on OS that is used. Faster on Windows98 slower on NT.
Ans. a

30) What causes "Thrashing" of a program :
a.) The constant swapping of program due to page faults.
b.) The inability of a program to get assess to a network resource.
c.) A near overflow / underflow of a variable.
d.) Assessing a memory area not allocated to the process.
Ans. a

31) Turbo-C is a / an
a.) IDE and C compiler/linker.
b) C-compiler/linker
c) C .
d) code generator.
Ans. a

32) The path of creation of an executable is :
a.) coding, linking, compiling, parsing.
b.) coding, parsing, compiling, linking.
c.) coding, compiling, parsing, linking.
d.) coding, compiling, linking, parsing.
Ans. b

33) Memory leak in software is due to
a.) Heavy recursion used in logic.
b.) Using structures of large size
c.) Improper use of the CPU registers.
d.) Improper release of allocated memory .
Ans. d

34) A "stable sort" is different from "sort" in the following way
a) Stable sort handles multiple thread access.
b.) Stable sort maintains the order of equal entities as it was in original sequence.
c.) Stable sort will always sort using the fastest scheme available in the library.
d.) Stable sort can handle exceptional conditions like interrupts in software.
Ans. b

35) The classic way of checking whether a mathematical expression has matched paranthesis will employ the following data structure :
a.) List.
b.) Directed Graph
c.) Threaded Binary tree.
d.) Stack.
Ans. d

36) The fastest sorting algorithm for a Random set of numbers is:
a.) Quick sort
b.) Shell sort
c.) Bubble sort
d.) Double Bubble sort.
Ans. a or b, I don't know

37) Which of these items is not a form of IPC:
a.) Shared Memory
b.) Pipes.
c.) Message queues.
d.) Semaphores
Ans. b

38) The term "socket" in software refers to:
a.) The software primitive which allows access to the hardware attached to the computer.
b.) The API exposed by drivers to assess a hardware.
c.) End point of connection used to trAnsfer data programmatically.
d.) Th primitive used by OS to get assess to the CPU for process scheduling.
Ans. c

39) Which of these statements is True:
a.) XML is a sub-set of HTML.
b.) XML is a less generic markup language standard derived from SGML.
c.) XML is HTML for Xtended Interfaces like mobile-phones.
d.) XML is a Xtension of HTML which defines new tags.
Ans. d

40) DCOM and CORBA are:
a.) Specifications which enable faster downloads on the net.
b.) Specifications that allow objects to be accessed in a location independent manner.
c.) Parallel implementations of XML by Microsoft and Sun respectively..
d.) Specifications to store objects on disk, for later retrieval.
Ans. b

41) The Process that involves monitoring and improving the software product development
is:
(a) Quality Assurance
(b) Quality Control
(c) Quality Improvement
(d) None of the above
Ans.

42) An executable test that verifies a functionality of the software unit with given input and expected output is called:
(a) Test Script
(b) Test Plan
(c) Test Case
(d) All of the above
Ans. maybe c

43) A Bug in the software is, when there is
(a) Application Crash
(b) Feature Failure
(c) Loss of Data
(d) All of the above
Ans. maybe a, or probably d

44) Testing based on External Specifications without knowledge of how the system is constructed:
(a) Black Box Testing
(b) White Box Testing
(c) Stress Testing
(d) Performance Testing
(e) None of the above
Ans. a

45) Which of the following is false
(a) QA is a process defined to attain Quality Standards
(b) QC is testing of the product during its production workflow
(c) A Test case could contain many Test PlAns.
(d) A Test Plan could contain many Test Script & Test Cases
Ans. c

46) A Printing Machine that trAnsfers impressions from Flat Plate to Rubber Cylinder, thence to paper is called
(a) Laser Printer
(b) Press, Offset
(c) Digital Printer
(d) All of the above
Ans. maybe Offset

47) Printing process in which ink is applied to paper or board from raised portions of printing plates or type is called:
(a) Printing, Letterpress
(b) Printing, Flexographic
(c) Printing, Silk screen
(d) None of the above
Ans. maybe letterpress

48) Yellow (lemon), Magenta (cold red), Cyan (blue-green) are the three
(a) Process Colors
(b) Monitor Colors
(c) Special Colors
(d) Spot Colors
Ans.

49) Leading specifies:
(a) The space between the lines in a paragraph.
(b) The space between the base of a line to the base of the following line in a paragraph.
(c) The space between the top of the X height and the bottom of the X height of the following line in a paragraph
(d) The space between the beard of the top line and the beard of the bottom-line.
Ans.

50) Which is a typical page layout program out of the following software products:
(a) Adobe Photoshop
(b) Adobe PageMaker
(c) Macromedia FreeHand
(d) Macromedia Director

Intel Placement Paper

2012-02-22T11:23:00.002-08:00

Section I - General Aptitude

1. Four persons picking balls. Peter one more than paul. Pam one more than
pat.

Peter + Paul +Pam + Pat = 60;

Peter + Paul = Pam + Pat + 10.

How much Peter pick?

Ans: 18

2. Semi-circle of Radius 12cm. Can a Rectangle of 12cm length & 6cm width be
fit in the

semi-circle?

3. Two series Questions? 11, 12, 14, 17, 21 (ans)

4. complete: 5, 25, 61,113, 181, 265       ( i'm not sure about the exact
numbers in 4th qn.)

5. To join 3 tables how many joints are required?

6. Wolf is called as flow, 8256 is called as?

7. 64, 54, 42, 31, 20 find the odd man out?

8. Seven members are there in a meeting. Each should handshake only once
with all

others. Find the total number of handshakes?

9. if 3 monkeys take 7 minutes to eat 3 bananas, what time will 10 monkeys
take to eat 10 bananas? ans: 7 minutes.

10.what time is it now? the no. of minutes from midnight to now is 9 times
the no. of minutes from now to noon . i think 10.53 am or 10.47 am (juz
check)

SECTION 2 SYSTEM CONCEPTS:

Questions from paging were asked..

1.     8085 architecture:

      a) Risc b) Cisc c) both d) neither

2.     Memory space depends on

        a) no. of address pins b) no. of data pins c) ALU

3.     Which is context free language?

4. hit ratio calculation in OS?

5. 2 frames

           Time        page

              1             some value

              2               ,,

              3               ,,

              4               ,,

              5               ,,

              6             stop

   what are the two pages in the frames when replacement method is used?

6. What is Zombie Process?

    SECTION 3. PROGRAMMING

Questions on loops in C, Data structures and RDBMS were asked.

1. which is better? 1st or 2nd or 3rd normal form or Boyce codd normal form?

2. which is not a command in sql? drop, delete, create, insert.?

3. Class A

   {

       fn to print â€˜Aâ€™;

      }

   Class B   {virtual fn to print â€˜Bâ€™ }

   Class C {fn to print â€˜Câ€™}

a ptr object is created for class C, what will be printed? just check out
that virtual fns concept in C++

4. Efficiency of sorting bubble, merge & memory efficiency for both best &
worst case?

5. which is memory inefficient? Quick, merge, bubble.

6. worst case for merge sorting? n log n, n2, n-1

7. which is correct or which will swap nos.. i think this is the qns..one of
the choices were.:

a^=b^=a^=b (in C)

8.         i= 20;

          j= 50;

          printf(â€œ%dâ€, sizeof(i+j));

9. which takes less time to execute.? ordinary functions or recursive funs.
i think its recursive since stack winding and unwinding is there.

10.how much memory will be allocated to this union:

union a

{

char b;

int no:2; (bit field)

}

11. what is the argc value?

    C:\ sample.exe val1 val2 val3

ans: 4

12. one qn about ptr to funciton :

     how will a ptr to a ptr to a fun will be declared

      void *(*ptr[]));

      void *ptr[];

      void (**ptr[]

Microsoft Placement Paper

2012-02-22T11:22:00.002-08:00

1. Besides communication cost, what is the other source of inefficiency in RPC? (answer : context switches, excessive buffer copying). How can you optimize the communication? (ans : communicate through shared memory on same machine, bypassing the kernel _ A Univ. of Wash. thesis)

2. Write a routine that prints out a 2-D array in spiral order!

3. How is the readers-writers problem solved? - using semaphores/ada .. etc.

4. Ways of optimizing symbol table storage in compilers.

5. A walk-through through the symbol table functions, lookup() implementation etc. - The interviewer was on the Microsoft C team.

6. An array of size k contains integers between 1 and n. You are given an additional scratch array of size n. Compress the original array by removing duplicates in it. What if k << n?

ANS. Can be done in O(k) time i.e. without initializing the auxiliary array!

7. An array of integers. The sum of the array is known not to overflow an integer. Compute the sum. What if we know that integers are in 2's complement form?

ANS. If numbers are in 2's complement, an ordinary looking loop like for(i=total=0;i< n;total+=array[i++]); will do. No need to check for overflows!

8. An array of characters. Reverse the order of words in it.

ANS. Write a routine to reverse a character array. Now call it for the given array and for each word in it.

9. An array of integers of size n. Generate a random permutation of the array, given a function rand_n() that returns an integer between 1 and n, both inclusive, with equal probability. What is the expected time of your algorithm?

ANS. "Expected time" should ring a bell. To compute a random permutation, use the standard algorithm of scanning array from n downto 1, swapping i-th element with a uniformly random element <= i-th. To compute a uniformly random integer between 1 and k (k < n), call rand_n() repeatedly until it returns a value in the desired range.

10. An array of pointers to (very long) strings. Find pointers to the (lexicographically) smallest and largest strings.

ANS. Scan array in pairs. Remember largest-so-far and smallest-so-far. Compare the larger of the two strings in the current pair with largest-so-far to update it. And the smaller of the current pair with the smallest-so-far to update it. For a total of <= 3n/2 strcmp() calls. That's also the lower bound.

11. If you are on a boat and you throw out a suitcase, Will the level of water increase.

12. Print an integer using only putchar. Try doing it without using extra storage.

13. Write C code for (a) deleting an element from a linked list (b) traversing a linked list

14. What are various problems unique to distributed databases

15. Declare a void pointer

ANS. void *ptr;

16. Set the highest significant bit of an unsigned integer to zero.
ANS. (from Denis Zabavchik) Set the highest significant bit of an unsigned integer to zero
#define zero_most_significant(h) \
(h&=(h>>1)|(h>>2), \
h|=(h>>2), \
h|=(h>>4), \
h|=(h>>8), \
h|=(h>>16))

17. Let f(k) = y where k is the y-th number in the increasing sequence of non-negative integers with the same number of ones in its binary representation as y, e.g. f(0) = 1, f(1) = 1, f(2) = 2, f(3) = 1, f(4) = 3, f(5) = 2, f(6) = 3 and so on. Given k >= 0, compute f(k).

18. A character set has 1 and 2 byte characters. One byte characters have 0 as the first bit. You just keep accumulating the characters in a buffer. Suppose at some point the user types a backspace, how can you remove the character efficiently. (Note: You cant store the last character typed because the user can type in arbitrarily many backspaces)

19. Reverse the bits of an unsigned integer.

ANS.

#define reverse(x) \

(x=x>>16|(0x0000ffff&x)<<16, \

x=(0xff00ff00&x)>>8|(0x00ff00ff&x)<<8, \

x=(0xf0f0f0f0&x)>>4|(0x0f0f0f0f&x)<<4, \

x=(0xcccccccc&x)>>2|(0x33333333&x)<<2, \

x=(0xaaaaaaaa&x)>>1|(0x55555555&x)<<1)

20. Compute the number of ones in an unsigned integer.

ANS.

#define count_ones(x) \

(x=(0xaaaaaaaa&x)>>1+(0x55555555&x), \

x=(0xcccccccc&x)>>2+(0x33333333&x), \

x=(0xf0f0f0f0&x)>>4+(0x0f0f0f0f&x), \

x=(0xff00ff00&x)>>8+(0x00ff00ff&x), \

x=x>>16+(0x0000ffff&x))

Microsoft Placement Papers

2012-02-22T11:21:00.002-08:00

15th at Mumbai.
The paper was easy except the programming question
part which was very lengthy compared to the time
alloted.

I m giving below the paper pattern. I m not very good
at remembering the questions exactly so i m just
giving the overview of the test.
There were four sections. All were separate. The time
alloted as well as the question papers also were
separate for each section.

Section I : English language test -25 Qstns.-20
Mints.

It contained usual & easy english language qustns.

like prepositions, articles, antonyms-synonyms etc.
There were two paragraphs. One was about types of
networks & another was about CGI scripting. There were
some easy qstns. asking info. from the para.

Section II : Mental ability -25 Qstns.-30 Mints.

It contained qstns. related to union & intersection
like there r N no. of students in a class, S no. of
them passed in 3 subjects, T no. of them passed in 2
subjects & U no. of them passes in all subjects, what
no. of students failed in all subjects.
Another type of qstns. were related to cubes, like
there is a cube, one side of it is painted with blue
color, the opposite side is painted with yellow color,
now it is cut into 16 cubes of equal size, now how
many cubes r having blue color at one side & no color
at its adjucent side, how many cubes r having no color
at any side etc.
Then there were qstns. like if + means -, * means /,
means *, / means +, then which of the following is
true ; there were four options. Each having some
calculation like 12+8-3*5/32=13. We have to select the
option having the correct calculation.
Most of the questions were similar to the above
mentioned patterns.

Section III : Aptitude test -20 Qstns.-20 Mins.

This section contained qstns. exactly like those asked
in the Bank PO, Railways & UPSC exams. Its different
from usual apti. qstns.

E.g. which two of the following are same : 11225689 :
11225986 : 11225689.

Then Data sufficiency qstns. like statement 1 is
sufficient to get the answer, both 1 & 2 needed,
neither 1 nor 2 can give the answer etc.
Then Condition checking qstns. like there is a
recruitment of clerk. Some conditions r given like the
candidate should be graduate with 60%, his age should
be less then 30 years, typing speed should be atleast
45 wpm. etc.
Based on this we have to answer a perticular candidate
will be selected or not given his details.
Then Some simple & usual riddles like Ram goes to 5 km
east, then 5 km south, then west, now in which
direction he is. Then a man pointing to a photo says
he is the son of my grandmothers' son like that.

Section IV : Programming -C & DFS OR VB -40 Qstns.
30 Mins.

U can choose either C & DFS paper or VB paper. I chose
C & DFS.
This was the toughest part bcoz qstns. were lengthy &
time was very short. Both C & DFS qstns. were almost
equal. Most of the C qstns. were asking about the
output of the given code. The DFS qstns. were about
link list, array, queue & also the graph theory.
This section demands a thorough preparation of C & DFS
& Graph theory.

TCS Practice Easy Aptitude Questions

2012-02-22T11:19:00.005-08:00

Dear Reader, Below are easy aptitude questions of kind which could help you to practice for TCS and other similar papers.
Question 1
Ramesh Khanna was five times old as his son Kishan Khanna eight years ago. Now he is three times as old as his son Kishan Khanna. Assume they both live in a country where people understand only binary numbers and they use symbol '0' for binary 1 and '1' for binary zero. Also they add 1 before any binary number. Express Ramesh Khanna’s present age in accordance to that world
a) 1001111 b) 1001111 c) 1100011 d) 1010000
Answer : a) 1001111
Solution :

Let Ramesh Khanna’s age be represented as ‘F’ eight years ago and the age of Kishan Khanna be represented as ‘S”.
F = 5 S
F + 8 = 3 (S + 8)
5S + 8 = 3S + 24
5S – 3 S = 24 – 8
2S = 16
S = 8
Now Ramesh Khanna’s age will be 5S + 8 = (5x8) + 8 = 48
Expressed as binary 110000 . However the people in their country use symbol 0 for binary one and 1 for binary zero. Replacing 1 with 0 and 0 with 1 we get 001111. Also those people usually add 1 before any binary number. Hence the answer becomes 1001111.
Question 2
Bhavna is presently three times as old as her daughter Anushka. Ten years ago Bhavna was five times as old as her daughter Anushka was. After how many years, sum of their ages will be 100.
a) 10 b) 20 c)15 d) none of these.
Answer : a) 10
Solution :
Let Bhavna’s present age be represented as B
Let her daughter Anushka’s age be represented as A.
B = 3 A
Ten years ago,
B - 10 = 5(A – 10)
3A - 10 = 5A - 50
-10 + 50 = 5A – 3A = 2 A
40 = 2 A
A = 20.
B = 3 x A = 60.
Present sum of their ages = A + B = 80.
When 10 is added to both A and B, Sum of their ages will become 100. Hence, after 10 years, their sum of ages will be 100.
Question 3
Monisha was seven times as old as her daughter Mercy eight years ago. Now three times Mercy’s age is her mother age. Before how many years the ratio of their ages (ratio of mother's age to Mercy's age) will be increased by 1 from the current ratio
a) 5 b) 4 c) 8 d) none of these.
Answer : b) 4
Solution :
Eight years ago -- let Monisha’s age be M and Mercy’s age be D.
M = 7 D
Now M + 8 = 3 (D + 8)
7 D + 8 = 3D + 24
7D - 3 D = 24 - 8 = 16
D = 4 = age of Mercy before 8 years
M = 28 = age of Mother before 8 years
Current age of Mercy = D + 8 = 12
Current age of Monisha = M + 8 = 36
Current ratio of mother's age to Mercy's age = 36/12 = 3.
Let before x years this ratio becomes 1 more than the current ratio. i.e x denotes the number of years before which the ratio becomes 3 + 1 = 4.
Then 36 - x / 12 - x = 4
36 - x = 48 - 4x
3x = 12
Or x = 4
i.e before 4 years, the ratio of their ages will be 4. Therefore answer = 4

TCS Practice 3 Easy Speed Questions

2012-02-22T11:19:00.002-08:00

Dear Reader,
Below are three easy speed related questions. Some questions would require you to apply simple formulas and some others will require you to apply a bit of logical skills which should be least difficult though.
Question 1
When a lady weighing 48 kg jogged at the rate of 10 km per hour the rate of dissipation of energy was twice that of when she was walking at the rate of 5 km per hour. Similarly the rate of dissipation of energy was higher during summer time than during the winter time. An athlete ran at the rate of 8 km per hour to the victory post and returned at 6 km per hour to the starting point. What is the average speed of the athlete?
a) 5 6/7 km/hr b) 6 6/7 km/hr c) 4 6/7 km/hr d) none of these
Answer : b) 6 6/7 km/hr

Solution :
Suppose a man covers a certain distance at x km/hr and an equal distance at y km/hr. Then,
the average speed during the whole journey is 2xy / x + y km/hr.
Applying the formula to athlete's case we get his average speed to be
2 x 8 x 6 divided by (8 +6) = 48/7 = 6 6/7 km/hr.
Question 2
A bus was travelling from Koyambedu to Salem Bus Stand via Vellore. A bus was travelling at a speed of 72 km per hour. However when taking into account the stoppage time the average speed became 60 km/hour. How many minutes does the bus stops in an hour?
a) 8 min b) 12 min c) 15 min d) 10 min.
Answer : d)10 min.
Solution :
Due to stoppages, the speed is reduced by 12 km/hr.
In other words, the time that the bus would had taken to drive for 12 Km will be equal to stoppage time per hour.
Time taken to cover 12 km = 12/72 x 60 = 10 min = Stoppage Time.
Question 3
Ram, John and Govind are walking from Marina Beach to Chengalput. Their speeds are in the ratio 4 : 3 : 5. The ratio of the time taken by them to reach Guindy by these persons will be:
a) 15:20:12 b) 4:3:5 c) 15:9:20 d) none of these.
Answer : a) 15:20:12
Solution :
For such problems, one can safely assume distances and speeds but in accordance with the constraints given in the question. For example, if you are going to assume the speeds of Ram, John and Govind, then they should be in the ration 4:3:5. That is their speeds can be 4,3 and 5 Km/hr or 8,6 and 10 Km/hr or 16,12 and 20 Km/hr and so on.
Similarly, the distance from marina to guindy is not given in the question. This means that irrespective of the distance the answer would be same. Hence you can assume any distance from marina to guindy. However, if you assume the distance to be the LCM or multiples of LCM of speeds that is 4,3 and 5, the calculation will become very simple. For example, the LCM of 4,3 and 5 is 60. Hence you can assume the distance to be 60 or 120 or 180.... etc.
In our case, let us assume the speeds to be 4,3 and 5 Km/hr and Distance to be 60 Km.
Ratio of time taken by the three = Distance / Speed of Ram : Distance / Speed of John : Distance / Speed of Govind
= 60/4:60/3:60/5 = 15:20:12

3 IBM Sample Technical Interview Questions

2012-02-22T11:18:00.003-08:00

During IBM technical interviews, you can expect simple technical questions dealing with concepts from OS, Databases etc. A good and basic understanding should help you in answering these questions well. Below are three sample questions.
Interview Question 1
Can you tell advantages of RDBMS over simple custom DBMS ?
Answer 1
Any data storage in any manageable structure can be called a DBMS. But, it is the responsibility of the programmer to maintain the data integrity and to take care of constraints. But on RDBMS, the system takes care of almost all of the data integrity requirements. Hence, the programmer could focus more on business logic rather than worrying about data integrity much.
Interview Question 2
Which is the layer of an Operating System that takes care of the system resource usage at the lowest level ?
Answer 2
Answer is Kernel Layer.
Interview Question 3
Can you tell any two advantages of stored procedures ?
Answer 3
Stored procedures can replace complex program segments requiring extensive SQL statements being executed from the code, hence they can make the application more manageable. Another advantage is that the usage of stored procedures can significantly reduce the network and bandwidth usage. This is because of the reduction in the number of requests and responses between business layer and database layer.

Sample Accenture Moderate Aptitude Questions

2012-02-22T11:18:00.000-08:00

Accenture generally gives due importance to aptitude section.However, a good number of questions from aptitude section can be expected to be moderate and from sections like distances, averages, ratios etc. If you can answer these questions in quick time, you get enough time to answer more difficult ones in the same section as well as other sections like verbal . Below are few simple questions that should be answered with ease.

Placement Question 1

If a shopkeeper accidentally sells a pen at double its actual selling price, his profit increases 4 fold. Then he realizes his mistake and sells other pens at their original selling price. Find his actual profit percentage.
Answer 1
let the original selling price be sp and the cost price be cp.
If he sells the pen at double the selling price, his new profit will be 2sp - cp.
His actual profit should had been (sp - cp). But his accidental rising of the selling price resulted in a four fold increase of the original profit which is 4 X (sp - cp).
Hence, 2sp - cp = 4 X (sp - cp)
Therefore sp = (3/2)cp.
Actual profit percentage = (sp - cp)/cp % = 50%

Placement Question 2

Consider three brothers Ram, Ravi and Rahul. Consider Ram to be taller than Ravi by 10% and Rahul is taller than Ravi by 30%. Now, by how much percentage Rahul is taller than Ram.
Answer 2
Let heights of Ram, Ravi and Rahul be p,q and r respectively. Then as per the conditions given in the question :
p = 110/100r and q = 130/100r
Ratios of heights of q and r will be (130/100r)/(110/100r) = 13/11.
Hence Rahul will be 13/11% taller than that of Ram.

Placement Question 3

John swims in a river at an effective speed of 8 Kilometers/hr. The velocity of the stream against John is measured to be 2 Kilometers/hr. Now, how much his effective speed will increase when he swims in the direction of the stream.
Answer 3
Since John opposes the stream speed to achieve an effective speed of 8 Km/hr, original physical speed of John would be 8 + 2 = 10 Kilometers/hr. In downstream, if he swims with his original speed his effective speed will become 10 + 2 = 12 Kilometers/hr. This is 4 Kilometers/hr more than that of the initial effective speed 8 Kilometers/hr.
Hence his speed would increase by 4/8 % = 50%.

3 Accenture Practice Probability Questions

2012-02-22T11:17:00.003-08:00

Below are three probability based questions to practice for Accenture papers.
Question 1
A box contains 4 blue and 5 white balls and another box contains 5 blue and 4 white balls. One ball is to be drawn from either of the two boxes. What is the probability of drawing a blue ball?
a) 2/9 b) 1/9 c) 4/9 d) 1/2
Answer : d) 1/2
Solution :
Probability of choosing first box = 1/2 and
Probability of choosing second box = 1/2
Imagine there is no second box at all :
P1 = Probability of choosing one blue ball from first box when there is no second box at all
= No of ways of choosing 1 blue ball from among 4 blue balls / Total number of ways of choosing 1 ball from all 9 balls.
= 4C₁ / 9C₁

Imagine there is no first box at all :
P2 = Probability of choosing one blue ball from second box when there is no first box at all
= No of ways of choosing 1 blue ball from among 5 blue balls / Total number of ways of choosing 1 ball from all 9 balls.
= 5C₁ / 9C₁
Now, consider our real scenario of having both the boxes :
P3 = Probability of choosing one blue ball from the first box = P1 x Probability of choosing first box = 4C₁ / 9C₁ x 1 / 2 = 2/9
P4 = Similarly probability of choosing one blue ball from the second box = P2 x Probability of choosing second box = 5C₁ / 9C₁ x 1 / 2 = 5/18
P (E) = Probability of choosing a blue ball from either of the boxes =
P3 + P4 = 2/9 + 5/18 = 1/2 --> eq 1
Note : Since the question reads we have to choose one blue ball from first OR second box we have used '+' sign in eq 1. If the question were choosing one blue ball from first AND second box, we should had used multiplication i.e ' x '.
Question 2
An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles. If four marbles are picked at random, what is the probability that at least one is blue?
a) 4/15 b) 69/91 c) 11/15 d) 22/91
Answer : b) 69/91 .
Solution :
Total possible outcomes = n(S)
= Selection of 4 marbles out of 15 marbles
= 15C₄ = (15 x 14 x 13 x 12) divided by 1 x 2 x 3 x4 = 1365
When no marble is blue, favourable number of cases n(E)
= Selection of 4 marbles out of 11 marbles
= 11C₄ = 11 x 10 x 9 x 8 divided by 1 x 2 x 3 x 4 = 330
Probability that atleast one ball is blue + Probability that no ball is blue = 1
Therefore, Probability that atleast one ball is blue = 1 - Probability that no ball is blue
Therefore, Probability that atleast one ball is blue = 1 - n(E) / n(S)
= 1 - 330/1365 = 1 - 22/91 = 69 /91
Question 3
A committee of 4 members is to be selected from a group of 4 women and 3 men. What is the probability that the committee has at least one man.?
a) 1/35 b) 3/7 c) 34/35 d) 4/7
Answer : c) 34/35
Solution :
Probability of there being all women in the committee = 4C₄ divided by 7C₄ = 1/35
But, Probability of there being all women in the committee + Probability of there being at least one man = Probability of formation of a committee with no restriction of gender = 1
Probability of there being at least one man = 1 - 1/35 = 34/35

TCS Practice 3 Easy Speed Questions

2012-02-22T11:16:00.004-08:00

Dear Reader,
Below are three easy speed related questions. Some questions would require you to apply simple formulas and some others will require you to apply a bit of logical skills which should be least difficult though.
Question 1
When a lady weighing 48 kg jogged at the rate of 10 km per hour the rate of dissipation of energy was twice that of when she was walking at the rate of 5 km per hour. Similarly the rate of dissipation of energy was higher during summer time than during the winter time. An athlete ran at the rate of 8 km per hour to the victory post and returned at 6 km per hour to the starting point. What is the average speed of the athlete?
a) 5 6/7 km/hr b) 6 6/7 km/hr c) 4 6/7 km/hr d) none of these
Answer : b) 6 6/7 km/hr
Solution :
Suppose a man covers a certain distance at x km/hr and an equal distance at y km/hr. Then,
the average speed during the whole journey is 2xy / x + y km/hr.
Applying the formula to athlete's case we get his average speed to be
2 x 8 x 6 divided by (8 +6) = 48/7 = 6 6/7 km/hr.

Question 2
A bus was travelling from Koyambedu to Salem Bus Stand via Vellore. A bus was travelling at a speed of 72 km per hour. However when taking into account the stoppage time the average speed became 60 km/hour. How many minutes does the bus stops in an hour?
a) 8 min b) 12 min c) 15 min d) 10 min.
Answer : d)10 min.
Solution :
Due to stoppages, the speed is reduced by 12 km/hr.
In other words, the time that the bus would had taken to drive for 12 Km will be equal to stoppage time per hour.
Time taken to cover 12 km = 12/72 x 60 = 10 min = Stoppage Time.
Question 3
Ram, John and Govind are walking from Marina Beach to Chengalput. Their speeds are in the ratio 4 : 3 : 5. The ratio of the time taken by them to reach Guindy by these persons will be:
a) 15:20:12 b) 4:3:5 c) 15:9:20 d) none of these.
Answer : a) 15:20:12
Solution :
For such problems, one can safely assume distances and speeds but in accordance with the constraints given in the question. For example, if you are going to assume the speeds of Ram, John and Govind, then they should be in the ration 4:3:5. That is their speeds can be 4,3 and 5 Km/hr or 8,6 and 10 Km/hr or 16,12 and 20 Km/hr and so on.
Similarly, the distance from marina to guindy is not given in the question. This means that irrespective of the distance the answer would be same. Hence you can assume any distance from marina to guindy. However, if you assume the distance to be the LCM or multiples of LCM of speeds that is 4,3 and 5, the calculation will become very simple. For example, the LCM of 4,3 and 5 is 60. Hence you can assume the distance to be 60 or 120 or 180.... etc.
In our case, let us assume the speeds to be 4,3 and 5 Km/hr and Distance to be 60 Km.
Ratio of time taken by the three = Distance / Speed of Ram : Distance / Speed of John : Distance / Speed of Govind
= 60/4:60/3:60/5 = 15:20:12

Infosys Sample Diagrammatic Problems

2012-02-22T11:16:00.000-08:00

Dear Reader,
Below are few sample problems requiring you to measure distances by drawing diagrams. Hope this helps in your preparation
Question 1
Rahman Khan wanted to do exercise seriously. He started from his house and went eastwards 2 km. He turned right and proceeded running 25 km. He took rest for a few minutes there. Now he took a left turn and walked 15 km and stopped. He spent his night in that place and thereafter he started walking towards north 18 km. Here he took a right turn and ran for 7 km and reached his uncle’s house. How far is Rahman Khan’s uncle’s house from his house?
a) 24 km b) 20 km c) 16 km d) 25 km
Answer : d) 25 km.
Solution :

Apply pythagoras theorem.
We have to find out AF.
Sq. root of 7² + 24² = 25.
Question 2
Prabhu Deva danced and walked 10 m south from his house. Then he turned left and jogged 25 m and turned left and ran 40 m. He took rest there for ten minutes. After ten minutes he turned right and walked 5 m to reach his Dance College. In which direction is the dance college from Prabhu Deva’s house?
a) South East b) North c) North East d) North west
Answer : c) North East.
Solution :

Note : Actually, this is a simple question where there will be NO calculations involved, but a simple direction assessment is good enough. In some cases, you might start working out the distances which could eat up your time. Hence, it is important that you read the question well, understand the scope of the question and optimize your solving effort accordingly.
It can be seen that the dance college is in North East direction of Prabhu Deva’s house.
Question 3
Samuel Johnson and Ajith were standing 40 metres away. Samuel Johnson walked 5 metres towards east and Ajith walked 5 metres towards west. Samuel Johnson turned his left and walked 20 metres and Ajith turned right and walked 20 metres. Now Samuel Johnson turned to his left and walked further 5 metres. Ajith turned to his left and walked 10 metres. What is the distance between Samuel Johnson and Ajith?
a) 25 m b) 40 m c) 50 m d) none of these.
Answer : a) 25 m
Solution :

The entire travel paths of Samuel and Ajith are drawn as a diagram where the travel path of Samuel is ABCD and that of Ajith is A1B1C1D1.
Final distance between DD1 = initial distance - C1D1 - CD = AA1 - C1D1 - CD = 40 - 10 - 5 = 25

CTS Practice Mixtures Problems

2012-02-22T11:15:00.003-08:00

Dear Reader, below are three problems from mixtures. These questions are of similar nature and require you to remember a simple equation to solve these.
Question 1
Sharmila Begum, a tea merchant has two varieties of tea one costing Rs.62 per kg. and the other costing Rs.72 per kg. In what ratio she should mix these two varieties such that the mixture is worth Rs.64.50 per kg.
a) 3:1 b) 2:1 c)1:3 d)none of these.
Answer : a) 3 : 1
Solution :
Let us assume that the ratio of new mixture be a : b so that the new price becomes Rs. C. (in our case X = 64.5). Let us assume C1 be the cost per Kg of I variety of tea and C2 be the cost per Kg of the II variety. (In this problem, C1 = 62 and C2 = 72)
Then we have, a.C1 + b.C2 / (a + b) = C
Substituting C1 = 62, C2 = 72 and C = 64.5, we get
62a + 72b / a + b = 64.5 ---- eq 1
Now let us substitute the value of options one by one in this equation to check which one satisfies this equation.
Option I : a = 3, b = 1
Substitute a, b values in eq 1 we get,
62. 3 + 72.1 / 4 = 64.5
Or 258 = 258
Thus, option I satisfies the equation and hence it is the correct answer.

Question 2
Vinayaga Sait & son are the leading sugar dealers in Kolkata, a place known for milk sweets. Vinayaga Sait wanted to know how many kilogram of sugar costing Rs.18 per kg can be mixed with 27 kg of sugar costing Rs. 14 per kg such that there may be a gain of 10% on selling the mixture at Rs.18.48 per kg.?
a) 63 kg b)72 kg c)81 kg d) none of these.
Answer : a) 63 kg.
Solution :
Selling price of 1 kg of mixture = Rs. 18.48 at 10% profit
Cost price of 1kg of mixture = 100/110 x 18.48= Rs.16.80
Take a look at the solution for previous question. We are again going to use the familiar equation
a.C1 + b.C2 / (a + b) = C -> eq 1
Here, C = 16.8, C1 = 18, C2 = 14.
Also, a/b = Weight of I variety of Sugar/ Weight of II variety of sugar
a/b = x/27 , where x = weight of I variety of Sugar
Substituting values, eq 1 becomes,
18a + 14b = 16.8(a + b)
Divide by b on both sides
18a/b + 14 = 16.8(a/b + 1)
But a/b = x/27
Therefore, 18x/27 + 14 = 16.8(x/27 + 1)
Multiply by 27 on both sides,
18x + 378 = 16.8(x + 27)
18x – 16.8x = 453.6 – 378
1.2x = 75.6
x = 75.6/1.2 = 63 Kg
Question 3
Karimlal Sait is running a famous rice shop and he consults his Manager to find out that in what ratio must rice at Rs.9.30 per kg be mixed with rice at Rs.10.80 per kg so that the mixture be worth Rs.10 per kg?
a. 7 : 8 b. 8 : 7 c. 31 : 36 d. 36 : 31
Answer : b) 8 : 7
Solution :
This question is very similar to the first question.
Let us again use our familiar equation : a.C1 + b.C2 / (a + b) = C -> eq 1
Values as given in question values are C1 = 9.30, C2 = 10.80, C = 10.
Substituting above values in eq 1 we get,
9.3a + 10.8b = 10(a + b) -> eq 2
Consider Option I where a = 7 and b = 8.
Substituting these values in eq 2 we get
9.3 x 7 + 10.8 x 8 = 10 (7 + 8)
151.5 != 150.
Hence, option I does not satisfy equation no 2. Hence option I is not correct.
Consider Option II where a = 8 and b = 7
Substituting these values in eq 2 we get
9.3 x 8 + 10.8 x 7 = 10 (8 + 7)
150 = 150
Option II satisfies the equation no 2 perfectly and hence it is the right answer.

Wipro Practice Equation Solving Questions

2012-02-22T11:14:00.003-08:00

Below are three easy questions requiring you to formulate and solve equations.
Question 1
A gentleman had ‘Rs.P’ with him. He wanted to distribute this amount to his five sons. He wanted his youngest son to get Rs.20 more than his fourth son. He gave his third son Rs.20 less than what he gave to his fourth son. His second son got Rs.20 more than his first son and Rs.20 less than what his third son got. How much did his first son get?
a) (P-200)/5 b) (P- 120)/4 c) (P-200)/4 d) none of these.
Answer : a) (P-200)/5
Solution :
Let his first son get x.
Then second son will get x +20.
Third son will get x+40
Fourth son will get x+60
Fifth son will get x+80 (youngest son)
So x + (x+20) + (x+40) + (x+60) + (x+80) = P
5x + 200 = P
X = (P – 200) / 5

Question 2
A received 20% more salary than B. C received 20% more than A. D received 20% more than C. If D received salary of Rs.34560, how much did A receive as salary?
a) Rs.22000 b) Rs.24000 c) Rs.26000 d) Rs.20000
Answer : b) Rs.24000
Solution :
Let B receive Rs.100 as salary.
Then A will receive 20% more than B's salary. That is, A will receive, 120/100 x B's salary = 120/100 x 100 = Rs. 120
Thus, A will receive Rs.120
C will receive 20% more than A's salary. That is, C will receive, 120/100 x A's salary = 120/100 x 120 = Rs. 144
Thus, C will receive Rs.144
D will receive 20% more than C's salary. That is, D will receive, 120/100 x C's salary = 120/100 x 144 = Rs. 172.8
Thus, D will receive Rs.172.80
Now, we will have to find out the salary of A if D receives 34560 as salary. From our above assumption of B receiving Rs.100, we can see that D will receive Rs. 172.8 when A receives Rs.120. Our task is now to find A's salary when D receives 34560.

           D's Salary       A's Salary
            172.8             120
            34560             ?

A's Salary when D receives 34560 = 34560 x 120 divided by 172.80 = Rs. 24000
Question 3
Agarwal has twice as much money as Edgar. Edgar has 50% more than Prasad has. If the average of the amounts they have is Rs.1100, how much money Agarwal has?
a) Rs. 1800 B) Rs.2100 c) Rs.800 d) none of these.
Answer : a) Rs. 1800
Solution :
Let Prasad has Rs.P
Then Edgar will have 50% more than prasad. That is, Edgar will have 150/100 x Prasad's Amount = 150/100 x P = 3/2 P
Agarwal will have twice as much as Edgar. Therefore Agarwal willl have 3/2P x 2 = 3P
Average of their amounts = Sum of their amounts / 3 = Rs. 1100
Or Sum of their amounts = 1100 x 3 = 3300
Or 3P + 3/2P + P = 3300
11P/2 = 3300
P = Rs. 600
Agarwal's amount = 3P = 3 x 600 = Rs. 1800