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Frequently Asked Interview Questions and Answers

(#M40000411) TCS QUESTION Keep an EYE

A sheet of paper has statements numbered from 1 to 40. For all values of n from 1 to 40, statement n says: 'Exactly n of the statements on this sheet are false.' Which statements are true and which are false?

All the statements are false.
The 39th statement is true and the rest are false.
The odd numbered statements are true and the even numbered statements are false.
The even numbered statements are true and the odd numbered statements are false.

Asked In TCS V.V.Ravi Teja (15 years ago)

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(#M40000385) CAT QUESTION time&distance Keep an EYE

a person goes by a boat 1km upstream to reach a point p where his hat falls into water after travelling 10 more minutes from p,he returns towards the shore and catches up with the hat exactly at the shore. what is the speed of the water current?

Asked In CAT V.V.Ravi Teja (15 years ago)

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(#M40000396) TCS QUESTION Keep an EYE

if there are 30 cans out of them 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 mices are required to find the poisoned can?

Solution

If mouse would die exactly after 14 hrs then definitely 1 will be the answer but here the given condition says that mouse will die within 14 hrs.
so this question will be solved by set theory.
answer is following
total beer bottles = 6
drinking strategy
bottle1 : mouse1
bottle2 : mouse2
bottle3 : mouse3
bottle4 : mouse1 and mouse2
bottle5 : mouse2 and mouse3
bottle6 : mouse3 and mouse1
on the basis of death of mice set we can decide the poisoned bottle

in this question upto 2 bottle answer will be 1 because 2^1 = 2
similarly upto 4 bottles answer will be 2 because 2^2 = 4
for upto 8,16,32,64,128 bottles answer will be 3,4,5,6,7

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Asked In TCS V.V.Ravi Teja (15 years ago)

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(#M40000400) TCS QUESTION Keep an EYE

A lady has fine gloves and hats in her closet- 18 blue 32 red and 25 yellow. The lights are out and it is totally dark. inspite of darkness she can make out the difference between a hat and a glove. She takes out an item out of the closet only if she is sure that it is a glove. How many gloves must she take out to make sure that she has a pair of each colour?

Solution

It is not given that how many of these items are gloves and how many are hats, if we consider that all the items are gloves then according to my opinion 32+25+2 = 59 gloves, she must take out to make sure she has a pair of each color.

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Asked In TCS V.V.Ravi Teja (15 years ago)

Solved Read Solution (11)

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(#M40000399) TCS QUESTION Keep an EYE

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?

Solution

70th statement says that at least 70 of the statements on this sheet are false which is wrong so definitely 70th statement is false, now 69th statement says that at least 69 of the statement on this sheet are false which is wrong so 69th statement is false.similarly upto 36th statement from last. now 35th statement says that at least 35 of the statements are false, which is true because last 35 are false already, so 35th statement is true, now 34th statement says that 34 of the statements on this sheet are false,which is true on the basis of truth of 35th statement.similarly upto first
so first 35 are true and last 35 are false.

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Asked In TCS V.V.Ravi Teja (15 years ago)

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(#M40000416) TCS QUESTION Keep an EYE

alok n bhanu play the following min max game
N=9+X+Y-Z
so,wer x,y,z,are variables representing single digits(0..9)alok would like to maximise N while bhanu would like to minimise the N towards the end.alok choose a single digit number and bhanu substitutes this for a variable of her own choice (X,Y,Z)alok then chooses the next value and bhanu the variable to substitute the value.finally alok proposes the value for the remaining variable.assuming both play to their optimal strategies. the value of the N at the end of the game would be??

Asked In TCS V.V.Ravi Teja (14 years ago)

Unsolved Read Solution (10)

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(#M40000397) TCS QUESTION Keep an EYE

1!+2!+3!+......+50!

Solution

Not possible to evaluate exactly if ! is the sign for factorial.

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Asked In TCS V.V.Ravi Teja (15 years ago)

Solved Read Solution (7)

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(#M40000391) CAMPUS QUESTION Keep an EYE

Q. 6 persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of seventh person?

Asked In campus V.V.Ravi Teja (15 years ago)

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(#M40000412) TCS QUESTION Keep an EYE

A sheet of paper has statements numbered from 1 to 40. For each value of n from 1 to 40, statement n says "At least n of the statements on this sheet are true." Which statements are true and which are false?

The even numbered statements are true and the odd numbered are false.
The first 26 statements are false and the rest are true.
The first 13 statements are true and the rest are false.
The odd numbered statements are true and the even numbered are false.

Asked In TCS V.V.Ravi Teja (15 years ago)

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(#M40000394) CAMPUS QUESTION Keep an EYE

Q. A lady took out jacket and gloves, which are available in blue 26,yellow 30 and red 56. Power goes off, she can distinguish between gloves and jacket but not in colors. What is the possibility that she will pick up pair of gloves of each color?

Asked In campus V.V.Ravi Teja (15 years ago)

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