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Placement Papers with Solutions

(#M40001092) TCS QUESTION Keep an EYE

10 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The rightmost person is not questioned. Which of the following possibilities are true?
A. All suspects are lying or the leftmost suspect is innocent.
B. All suspects are lying and the leftmost suspect is innocent .
i> A only
ii> B only
iii> Both A and B
iv> Neither A nor B

Solution

if first is victim then all suspects are lying. here you should remember that the rightmost person is not questioned.
If any of the person leaving leftmost is victim then the leftmost suspect is innocent. but "and" should not be used between the conditions because leftmost is not innocent necessarily


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Asked In TCS RISHI KUMAR (14 years ago)

Solved kapil Read Solution (3)

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(#M40001091) TCS QUESTION Keep an EYE

Q. For the FIFA world cup, Paul the octopus has been predicting the winner of each match with amazing success. It is rumored that in a match between 2 teams A and B, Paul picks A with the same probability as A's chances of winning. Let's assume such rumors to be true and that in a match between Ghana and Bolivia, Ghana the stronger team has a probability of 2/3 of winning the game. What is the probability that Paul will correctly pick the winner of the Ghana-Bolivia game?
2/3
1/9
5/9
4/9

Asked In TCS RISHI KUMAR (14 years ago)

Solved neerav Read Solution (4)

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(#M40001086) TCS QUESTION Keep an EYE

An athlete decides to run the same distance in 1/4th less time that she usually took. by how much percent will she have to increase her average speed?

Solution

let initial velocity = u and time taken = t
since athlete decides to run the same distance in 1/4th less time,
then new time taken will be t-(t/4) = 3t/4
let the new volocity = v
then for the same distance u*t = v*(3t/4) on solving we get v = 4u/3
so increment = 4u/3 - u = u/3
so % increment in speed = 33.33%


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Asked In TCS Ragini (14 years ago)

Solved Read Solution (3)

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(#M40001077) TCS QUESTION .... Keep an EYE

5) A sheet of paper has statements numbered from 1 to 70. For all values of n from 1 to 70. Statement n says ' At least n of the statements on this sheet are false. ' Which statements are true and which are false?

a) The even numbered statements are true and the odd numbered are false.
b) The odd numbered statements are true and the even numbered are false.
c) The first 35 statements are true and the last 35 are false.
d) The first 35 statements are false and the last 35 are false.

Solution

This question is based on at least, so truth of any statement (suppose nth) will imply the truth of all (n-1)th, (n-2)th,....... 1st statements, so the only possible answer will be c)
The first 35 statements are true and the last 35 are false.

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Asked In TCS KUMAR SOUVIK MAJI (14 years ago)

Solved Read Solution (8)

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(#M40001074) TCS QUESTION Keep an EYE

THE AVERAGE TURNOVER OF A COMPANY IN JAN,FEB,MAR IS 12CRORE WHILE THAT OF MAR,APR,MAY,JUNE IS RS.14 CRORE. WHAT IS THE TURNOVER IN MARCH IF AVERAGE FOR THE FIRST HAF OF THE YEAR IS RS.12 CRORE

12CRORE

14CRORE

16CRORE

18CRORE

20CRORE

Asked In TCS tk (14 years ago)

Solved RISHI KUMAR Read Solution (11)

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(#M40001065) TCS QUESTION Keep an EYE

A boy bought a roll A of 56 inches wide and 141 yards long. he also bought B of 77 inches wide of length 333 years. time taken for cutting A into 1 yard piece is 2 seconds.time taken to cut into 141 pieces of 1 yard each is how much?

Asked In TCS Ragini (14 years ago)

Solved gayathri Read Solution (7)

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(#M40001058) TCS QUESTION Keep an EYE

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 hrs and so on). if 1/16 of B is filled in 17 hrs,what time it will take to get completely filled?

Asked In TCS Ragini (14 years ago)

Solved RISHI KUMAR Read Solution (4)

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(#M40001040) TCS QUESTION Keep an EYE

A car manufacturer produces only red and blue models which come out of the final testing area completely at random. What are the odds that 5 consecutive cars of the same color will come through the test area at any one time?
a)1 in 16
b)1 in 125
c)1 in 32
d)1 in 25

Solution

The probability for the question will be 1/16 and answer of KAPIL is right but question is saying about odds and odds mean favorable probability/non favorable probability = (1/16)/(15/16) = 1/15
odds has two category 1) in favour 2) against
odds in favour = favorable probability/non favorable probability
odds against = non favorable probability/ favorable probability




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Asked In TCS Somil Nain (14 years ago)

Solved kapil Read Solution (8)

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(#M40001039) TCS QUESTION Keep an EYE

Alok and Bhanu play the following coins in a circle game. 99 coins are arranged in a circle with each coin touching two other coin. Two of the coins are special and the rest are ordinary. Alok starts and the players take turns removing an ordinary coin of their choice from the circle and bringing the other coins closer until they again form a (smaller) circle. The goal is to bring the special coins adjacent
to each other and the first player to do so wins the game. Initially the special coins are separated by two ordinary coins O1 and O2. Which of the following is true ?

a) In order to win, Alok should remove O1 on his first turn.
b) In order to win, Alok should remove one of the coins different from O1 and O2 on his first turn.
c) In order to win, Alok should remove O2 on his first turn.
d) Alok has no winning strategy.

Asked In TCS Somil Nain (14 years ago)

Solved sambram Read Solution (11)

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(#M40001033) TCS QUESTION Keep an EYE

Alan, Steven and Marwick dug up 9 nuggets. Their weights were 154,16,19,101,10,17,13,46 and 22 kgs. They took 3 each. Alan’s weighed twice as much as Steven’s. How heavy were Marwick’s nuggets?

Asked In TCS Somil Nain (14 years ago)

Solved Hemanth Kumar M Read Solution (3)

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