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(#M40001566) TCS QUESTION latest 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 the 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 if it is a glove. How many gloves must she take out to make sure she has a pair of each colour?
a) 50
b) 8
c) 60
d) 42

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. But closest option is 60 so it will be the answer

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(#M40001560) TCS QUESTION latest 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?
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.

Asked In TCS Aditi Sharma (14 years ago)

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(#M40001557) TCS QUESTION latest question Keep an EYE

On planet korba, a solar blast has melted the ice caps on its equator. 9 years after the ice melts, tiny planetoids called echina start growing on the rocks. Echina grows in the form of circle, and the relationship between the diameter of this circle and the age of echina is given by the formula d = 4*[sqrt(t-9)] for t>9, where d represents the diameter in mm and t the number of years since the solar blast. Jagan recorded the radius of some echina at a particular spot as 7mm. How many years back did the solar blast occur?
a) 17 b) 21.25 c) 12.25 d) 14.05

Solution

Answer: (b) 21.25.
Explanation:
radius=7mm.
So dia= 14mm.
putting D=14 in equation we can easily calculate
t=21.25
This answer is given by ANIRBAN and is correct answer


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Asked In TCS Aditi Sharma (14 years ago)

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(#M40001554) TCS QUESTION latest 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 AMAR
First car can come out with any colour with prob 1.
second car will come out with probability of same color as 1/2.
third car will come out with probability of same color as 1/2.
4th car will come out with probability of same color as 1/2.
5th car will come out with probability of same color as 1/2.

so probability is 1*1/2* 1/2* 1/2 *1/2=1/16
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 Aditi Sharma (14 years ago)

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(#M40001552) TCS QUESTION latest question Keep an EYE

) Six friends decide to share a big cake. Since all of them like the cake, they begin quarreling who gets to first cut and have a piece of the cake. One friend suggests that they have a blindfold friend choose from well shuffled set of cards numbered one to six. You check and find that this method works as it should simulate a fair throw of a die. You check by performing multiple simultaneous trials of picking the cards blindfold and throwing a die. You note that the number shown by the method of picking up a card and throwing a real world die, sums to a number between 2 and 12. Which total would be likely to appear more often 8,9 or 10?
a) 8
b) All are equally likely
c) 9
d) 10

Solution

the best solution will be 7, and there will be total 6 cases for this choice (1,6), (2,5), (3,4), (4,3), (5,2), (6,1)
but this one is not in the choices so out of the 4 choices givem 8 will be the best choice. For this choice there are 5 methods (2,6), (3,5), (4,4), (5,3), (6,2)
similarly for 9 there are 4 choices (3,6), (4,5), (5,4), (6,3)
for 10 there are 3 choices (4,6), (5,5), (4,6)
Answer is (a)


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(#M40001547) TCS QUESTION latest question Keep an EYE

A scientist was researching on animal behavior in his lab. He was very interested in analyzing the behavior of bear. For some reason he travelled 1 mile in north direction & reached at North Pole. There he saw a bear. He then followed the bear around 1 hr with a speed of 2km/hr in east direction. After that he travelled in south direction & reached at his lab in 2 hrs. Then what is the color of the bear?

Solution

Generally polar bears r white colored so the color of north pole bear will be the white color
This answer is given by RAVALIKA and is correct answer

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(#M40001546) TCS QUESTION latest 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. In spite 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 she has a pair of each color?

Asked In TCS Aditi Sharma (14 years ago)

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(#M40001543) TCS QUESTION latest 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 to test, 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 Aditi Sharma (14 years ago)

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(#M40001542) TCS QUESTION latest question Keep an EYE

- If a and b are mixed in 3:5 ration and b and c are mixed in 8:5
ration if the final mixture is 35 liters, find the amount of b?

Solution

a:b=3:5=3*8:5*8=24:40
b:c=8:5=8*5:5*5=40:25
therefore a:b:c=24:40:25
now amount of b is=35*40/(24+40+25)=15.73
this answer is given by SUBHENDU BIKASH ROY and is correct answer

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(#M40001541) TCS QUESTION latest question Keep an EYE

In T.Nagar the building were numbered from 1 to 100.Then how many
4’s will be present in the numbers?

Solution

4, 14, 24, 34, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 54, 64, 74, 84, 94
total 20 times 4 is there


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Asked In TCS Aditi Sharma (14 years ago)

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