• Placement Questions

Placement Papers with Solutions

(#M40000032) INFOSYS QUESTION Keep an EYE

Light glows for every 13 seconds . How many max. times did it glow between 1:57:58 and 3:20:47 am.

Asked In Infosys (16 years ago)

Solved Vadivelan M Read Solution (4)

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(#M40000031) INFOSYS QUESTION Keep an EYE

How can 1000000000 be written as a product of two factors neither of them containing zeros

Asked In Infosys (16 years ago)

Solved Aman Read Solution (3)

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(#M40000030) INFOSYS QUESTION Keep an EYE

A man collects cigarette stubs and makes one full cigarette with every 8 stubs. If he gets 64 stubs how many full cigarettes can he smoke.

Asked In Infosys (16 years ago)

Solved Aman Read Solution (3)

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(#M40000029) INFOSYS QUESTION Keep an EYE

Six persons A,B,C,D,E &F went to soldier cinema. There are six consecutive seats. A sits in the first seat followed by B, followed by C and so on. If A taken on of the six seats, then B should sit adjacent to A. C should sit adjacent to A or B. D should sit adjacent to A, B or C and so on. How many possibilities are there ?

Solution

First we have to arrange A, there is 1 method for it, for second person B, there are 2 methods one left and one right, for third 2 methods are there same as for B similarly for others, so total number of methods = 1*2*2*2*2*2 = 32

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Asked In Infosys (16 years ago)

Solved Read Solution (6)

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(#M40000015) INFOSYS QUESTION Keep an EYE

In the 4 digits 1,2,3,4 how many 4 digested numbers are possible which are divisible by 4? Repetitions are allowed

Asked In Infosys (16 years ago)

Solved Sanal Jose Read Solution (4)

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(#M40000115) SELF QUESTION Give me your remainder Keep an EYE

Find the smallest number N such that

N/10 leaves remainder 9

N/9 leaves remainder 8

N/8 leaves remainder 7

N/7 leaves remainder 6

N/6 leaves remainder 5

N/5 leaves remainder 4

N/4 leaves remainder 3

N/3 leaves remainder 2

N/2 leaves remainder 1

N/1 leaves remainder 0

Tijo Jose (16 years ago)

Solved Aman Read Solution (4)

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(#M40000114) SELF QUESTION Go home early. Keep an EYE

A man goes to work daily. Everyday his wife picks him from railway station at 6 o'clock. One day, he left office early and reached the station at 5 o'clock. So, he started walking home. On the way, he met his wife, and they returned together in the car. They reached home ten minutes earlier than usual time. How much time did the man walk?

Tijo Jose (16 years ago)

Solved Aman Read Solution (6)

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(#M40000097) MICROSOFT QUESTION Keep an EYE

If you had an infinite supply of water and a 5 quart and 3 quart pail, how would you measure exactly 4 quarts?

Asked In Microsoft (16 years ago)

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(#M40000096) MICROSOFT QUESTION Keep an EYE

You have 5 jars of pills. Each pill weighs 10 gram, except for contaminated pills contained in one jar, where each pill weighs 9 gm. Given a scale, how could you tell which jar had the contaminated pills in just one measurement?

Asked In Microsoft (16 years ago)

Solved Sanal Jose Read Solution (2)

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(#M40000028) INFOSYS QUESTION Keep an EYE

A + B + C +D = D + E + F + G = G + H + I =17. If A = 4. What are the values of D and G. Each letter taken only one of the digit from 1 to 9.

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (13)

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(#M40000027) INFOSYS QUESTION Keep an EYE

A software engineer starts from home at 3pm for evening walk. He walks speed of 4kmph on level ground and then at a speed of 3kmph on the uphill and then down the hill at a speed of 6kmph to the level ground and then at a speed of 4kmph to the home
If he reaches home at 9pm. What is the distance on the way

Asked In Infosys (16 years ago)

Solved Vadivelan M Read Solution (7)

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(#M40000026) INFOSYS QUESTION Keep an EYE

A ship is away from the shore by 180 miles. A plane is traveling at 10 times speed of the ship. How long from the shore will they meet?

Asked In Infosys (16 years ago)

Solved Aman Read Solution (4)

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(#M40000025) INFOSYS QUESTION Keep an EYE

Food grains are to be sent to city from go down. Owner wants to reach the food grains at 11 O' Clock in the city. If a truck travels at a speed of 30km/hr then he will reach the city one hour earlier. If the truck travels at a speed of 20km/h then he will reach the city one hour late. Find the distance between the go down to city. Also with which speed the truck should travel in order to reach at exactly 11 'O clock.

Asked In Infosys (16 years ago)

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(#M40000024) INFOSYS QUESTION Keep an EYE

A person was going through train from Bombay to Pune. After every five minutes he finds a train coming from opposite direction. Velocity of trains are equal of either direction. If the person reached Pune in one hour then how many trains he saw in the journey ?

Asked In Infosys (16 years ago)

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(#M40000023) INFOSYS QUESTION Keep an EYE

A boat M leaves shore A and at the same time boat B leaves shore B. They move across the river. They met at 500 yards away from A and after that they met 300 yards away from shore B without halting at shores. Find the distance between the shore A & B.

Solution

1200 yards

If X is the distance, a is speed of A and b is speed of B, then ;
500/a= (x-500)/b and (x+300)/a = (2x-300)/b , solving it, we get x=1200 yards
This answer is given by SANGEETA and is correct answer

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Asked In Infosys (16 years ago)

Solved Read Solution (1)

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(#M40000022) INFOSYS QUESTION Keep an EYE

A person has to cover the fixed distance through his horses. There are five horses in the cart. They ran at the full potential for the 24 hours continuously at constant speed and then two of the horses ran away to some other direction. So he reached the destination 48 hours behind the schedule. If the five horses would have run 50 miles more, then the person would have been only 24 hours late. Find the distance of the destination.

Asked In Infosys (16 years ago)

Solved srujan Read Solution (1)

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(#M40000021) INFOSYS QUESTION Keep an EYE

There are twelve consecutive flags at an equal interval of distance. A man passes the 8th flag in 8 seconds. How many more seconds will he take to pass the remaining 4 flags ?

Asked In Infosys (16 years ago)

Solved avinash reddy Read Solution (6)

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(#M40000020) INFOSYS QUESTION Keep an EYE

Two people X & Y walk on the wall of a go down in opposite direction. They meet at a point on one side and then go ahead. X after walking for some time, walks in opposite direction for 15 mtrs. Then again he turns back and walks in the original direction. What distance did Y walk before they met again, if X walks 11 mtrs by the time Y walks 8 mtrs.

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (2)

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(#M40000019) INFOSYS QUESTION Keep an EYE

9 cards are there. u have to arrange them in a 3*3 matrix. cards are of 4 colors. they are red,yellow,blue,green.
conditions for arrangement:
one red card must be in first row or second row.
2 green cards should be in 3rd column.
Yellow cards must be in the 3 corners only.
Two blue cards must be in the 2nd row.
At least one green card in each row.

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (1)

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(#M40000018) INFOSYS QUESTION Keep an EYE

There are 3 piles each contain 10 15 20 stones. There are A,B,C,D,F,G and H persons. One man can catch unto four stones from any pile. The last man who takes will win. If first A starts next B. and so on who will win?

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (5)

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(#M40000017) INFOSYS QUESTION Keep an EYE

There are 2 diamonds, 1 spade, 1 club and 1 heart. Out of these 5 cards there are 1 king, 1 jack, 2 queen and 1 ace. These are arranged in a straight line. Find the probability that
1. The king is at third place
2. The left of jack is an ace and its right is king
3. No two red colors are consecutive.
4. The queens are separated by two cards.

Solution

1) Probability to get the king at third place = 1/5
2) Probability to get the left of jack an ace and its right a king
= (3*2*1/2*1)/(5*4*3*2*1/2*1)

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Asked In Infosys (16 years ago)

Solved

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(#M40000016) INFOSYS QUESTION Keep an EYE

Two men are going along a track rail in the opposite direction. One goods train crossed the first person in 20 sec. After 10 min the train crossed the other person who is coming in opposite direction in 18 sec .After the train has passed, when the two persons will meet?

Solution

Let us consider that speed of train , first man and second man are respectively t, f and s.
According to first given condition goods train crossed the first person moving in same direction in 20 sec.
so length of the will be 20(t-f)
similarly train crossed the second man in 18 sec.
so length of the train will be 18(t+s)
on comparing these two equations, we get 20(t-f) = 18(t+s)
or 2t = 20f + 18s
or t = 10f + 9s
now it is given that After 10 min the train crossed the other person who is coming in opposite direction so
if we consider this way of train as L then the next equation will be
L = 600t (here 600 is used for 10 minutes)
finally as asked in the question the time required to meet the two man after the train has passed will be given by
time = (L-600 f)/(f+s) {here 600f is used for the distance traveled by first man in 10 minutes}
= (600t-600f)/(f+s)
= [600(10f+9s)-600f]/(f+s)
= 600(10f+9s-f)/(f+s) = 600*9(f+s)/(f+s) = 600*9 seconds = 600*9/60 min
= 90 minutes


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Asked In Infosys (16 years ago)

Solved Read Solution (4)

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(#M40000014) INFOSYS QUESTION Keep an EYE

There are 4 married couples. How many couple groups are possible ? there should not be his or her spouse.

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (7)

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(#M40000013) INFOSYS QUESTION Keep an EYE

Escalator Problem. A person walking takes 26 steps to come down on a escalator and it takes 30 seconds for him for walking. The same person while running takes 18 second and 34 steps. How many steps are there in the escalator?

Asked In Infosys (16 years ago)

Solved Vadivelan M Read Solution (3)

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(#M40000012) INFOSYS QUESTION Keep an EYE

There are some chicken in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chicken and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chicken are there?

Asked In Infosys (16 years ago)

Solved susmit Read Solution (5)

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(#M40000011) INFOSYS QUESTION Keep an EYE

There is 66x33m rectangular area. Ram is 11/8 times faster than Krishna. Both of them started walking at opposite ends and they met at some point then, Ram said "See you in the other end" Then they continued walking. After some time Ram thought he will have tea so he turned back walked back 15 meters then he changed his mind again and continued walking .How much Krishna has traveled by the time they meet?

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (2)

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(#M40000116) IIT-JEE QUESTION sum to n terms Keep an EYE

sum to n terms: 0!/5! + 1!/6! + 2!/7! + ... ?

Solution

r th term of the series is (r-1)!/(r+4)!= 1/r(r+1)(r+2)(r+3)(r+4)
= (1/24r)-(1/6(r+1))+(1/4(r+2))-(1/6(r+3))+(1/24(r+4))
Now put r = 1,2,3,4,5.......upto n and add all the terms [here a special arrangement is that the solution of 1/24-1/6+1/4-1/6+1/24 is 0 so sum of terms from 1/5 to 1/n would be 0]
finally we will get
n(n+5)(n^2+5n+10)/96(n+1)(n+2)(n+3)(n+4)

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Asked In IIT-JEE (16 years ago)

Solved Read Solution (1)

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(#M40000113) SELF QUESTION It is 10 o'clock! Keep an EYE

A clock takes 7 seconds to ring bell at 7 o'clock. How long will it take for the same clock to ring bell at 10 o'clock?

Tijo Jose (16 years ago)

Solved Sanal Jose Read Solution (9)

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(#M40000010) INFOSYS QUESTION Keep an EYE

The main line train starts at 5.00AM and the harbor line train starts at 5.02AM.Each train has the frequency of 10 minutes. If a guy goes in the morning at a random time what is the probability of he getting main line train?

Asked In Infosys (16 years ago)

Solved Tijo Jose Read Solution (6)

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(#M40000009) INFOSYS QUESTION Keep an EYE

There are 5 burglars and once went to a bakery to rob it obviously. The first guy ate 1/2 of the total bread and 1/2 of the bread. The second guy ate 1/2 of the remaining and 1/2 of the bread. The third guy ,fourth guy and fifth guy did the same. After fifth guy there is no bread left out. How many bread are there?

Solution

(1/2 + 1/2) = 1
2(1 + 1/2) = 3
2(3 + 1/2) = 7
2(7 + 1/2) = 15
2(15 + 1/2) = 31

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Asked In Infosys (16 years ago)

Solved Sanal Jose Read Solution (5)

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