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Frequently Asked Interview Questions and Answers

(#M40152886) TCS QUESTION Keep an EYE

A research lab in Chennai requires 100 mice and 75 sterilized cages for a certain set of laboratory
experiments . To identify the mice, the lab has prepared labels with numbers 1 to 100 , by combining tags
numbered 0 to 9. The SPCA requires that the tags be madeof toxin-free material and that the temperature of
the cages be maintained at 27 degree Celsius. Also , not more than 2 mice can be caged together and each cage
must be at least 2 sq.ft in area. The 5 experiments tobe conducted by lab are tobe thoroughly documented and
performed only after a round of approval by authorities. The approval procedure takes around 48 hours. How
many times is the tag numbered '4' used by the lab in numbering these mice?
a) 9
b) 19
c) 20
d) 21

Asked In TCS vaishali rathore (10 years ago)

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(#M40153316) TCS QUESTION Keep an EYE

There are 4 boxes colored red, yellow, green and blue. If 2 boxes are selected, how many combinations are there for at least one green box or one red box to be selected?

Asked In TCS vaishali rathore (10 years ago)

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(#M40153016) TCS QUESTION Keep an EYE

. Lottery balls are numbered and coloured balls. In the famous Lotto, six numbered balls are
drawn at random from 49 balls. In each ticket one needs to guess the six numbers that
would be drawn. If no correct guesses are received the prize money is carried to the next
draw. It is not uncommon to see prize money accumulating to several millions of dollars. An
urn contains m white and n black balls. A ball is drawn at random and is put back into the
urn along with k additional balls of the same colour as that of the ball drawn. A ball is again
drawn at random. The probability of drawing a white ball now:
a) Does not depend on k
b) Increases with k
c) Decreases with k
d) Cannot be determined without additional information. Lottery balls are numbered and coloured balls. In the famous Lotto, six numbered balls are
drawn at random from 49 balls. In each ticket one needs to guess the six numbers that
would be drawn. If no correct guesses are received the prize money is carried to the next
draw. It is not uncommon to see prize money accumulating to several millions of dollars. An
urn contains m white and n black balls. A ball is drawn at random and is put back into the
urn along with k additional balls of the same colour as that of the ball drawn. A ball is again
drawn at random. The probability of drawing a white ball now:
a) Does not depend on k
b) Increases with k
c) Decreases with k
d) Cannot be determined without additional information

Asked In TCS vaishali rathore (10 years ago)

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(#M40153034) TCS QUESTION Keep an EYE

Bhanu spends 30% of his income on petrol on scooter. ¼ of the remaining on house rent and the balance on food. If he spends Rs.300 on petrol then what is the expenditure on house rent?
a) Rs.525 b) Rs.1000 c) Rs.675 d) Rs.175

Asked In TCS vaishali rathore (10 years ago)

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(#M40152893) TCS QUESTION Keep an EYE

Paul the octopus who has been forecasting the outcome of FIFA world cup matches with tremendous
accuracy has now been invited to predict ICC world cup matches in 2011. Wewill assume that the world cup
contenders have been divided into 2 groups of 9 teams each. Each team in a group plays the other teams in the
group. The top two teams from each group enter the semifinals ( after which the winner is decided by
knockout).
However, Paul has a soft spot for India and when India plays any team, Paul always backs India. Alas, his
predictions on matches involving India are right only 2 out of 3 times. In order to qualify for the semi finals, it
is sufficient for India to win 7 of its group matches. What is the probability that India will win the ICC world
cup?
a) (2/3)^10
b) (2/3)^9 + 8/3 * (2/3)^9
c) 8/3 * (2/3)^9
d) (2/3)^10 + 8/3*(2/3)^9

Asked In TCS vaishali rathore (10 years ago)

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(#M40152877) TCS QUESTION TIME AND WORK Keep an EYE

Three pipes, A, B, & C are attached to a tank. A & B can fill it in 20 & 30 minutes respectively while C can empty it in 15 minutes. If A, B & C are kept open successively for 1 minute each, how soon will the tank be filled?

Asked In TCS vaishali rathore (10 years ago)

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(#M40152939) TCS QUESTION Keep an EYE

the cost of manufacturing an article is made up of material, labour and overheads in the radio 4:3;2 .if the cost of labour is 45 find the profit % if article sold for 180.
a) 50%b)33.33% c)25% d)20%

Asked In TCS vaishali rathore (10 years ago)

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(#M40152876) TCS QUESTION PROGRESSION Keep an EYE

6)Find the smallest number in a GP whose sum is 38 and product 1728

(a) 12
(b) 20
(c) 8
(d) none of these

Asked In TCS vaishali rathore (10 years ago)

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(#M40153317) TCS QUESTION Keep an EYE

Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, roy will be twice as old as Erik, then in 2 years what would be Roy's age multiplied by Iris's age?

Asked In TCS vaishali rathore (10 years ago)

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(#M40153013) TCS QUESTION Keep an EYE

two vehicles A and B leave from Y to x . A overtake B at 10.30 am and reaches city X at 12.00 pm .it wait for 2 hour and return to city Y.on its way it meet B at 3;00 pm and reaches city X . waits for 1 hour and return to city Y .After how many hour will B reaches city Y from the time A overtook him for the first time?
a} 50 hour
b] 41.5 hour
c]49.5 hour
d]37.5 hour

Asked In TCS vaishali rathore (10 years ago)

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