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Infosys Test Paper-2 for placement

Infosys Test paper2

1) There are three triplets to a couple: Annie, Fanny & Danny. The couple finds dirty footprints on the floor of kitchen. All of them have same foot size, so they ask them who did it. To which they replied:
Annie: I didn’t do it
Fanny: Danny did it
Danny: Fanny is not lying
Out of three kids, only one of them is saying truth.
Whose footprints were on the floor??? (4 marks)

2) one player scores these much runs less than other, he scores these many more than some other, & so on for a number of players….& were asked to find total runs scored.
Simple Equations lead to individual runs of players & answer was deduced..
It came 338 in our case… (3 marks)

3) A guy has got some x bucks with him….. gives half of it plus 2 to some shop…. Again gives the half of the remaining plus five to some other shop… & finally he has Rs.5 remaining… find x..
ANS: I got it 44..(check it)

4) Trains start simultaneously from station X & station Y & heads towards each other… if 5 hours is the time to reach the other station, how many trains pass by each one…?
ANS: I got it 9 hours (check this too)

5) There are five persons in an office in the post of buyer, clerk, footwalker, manager,cashier. Allen, Benett, Clark, Ewinger, Davis holds the post. Among the 5 two have their lunch time from 11:30 - 12:30 & the rest have it in 12:30 - 1:30
Mrs Allen & Mrs Benett are sisters.
Cashier & clerk share their lunch among themselves.
Two Bachelors share their rooms.
Davis & Ewinger do not face each other from the day Davis reported Ewinger to the Manager when he returned from lunch & found out that Ewinger has already left for lunch before time. --> 8 marks

6) Find the next term of the series:
a) 1,2,3,5,16,__
b) 1,2,3,8,__,224
Ans:
a) 231 (2^2 - 1^2 = 3, 3^2 - 2^2 =5, ......16^2 - 5^2 = 231)
b)27 (2*1+1=3, 3*2+2=8, 8*3+3=27)

7) no divisible by 3,4,5,7 &is less than 500. (question s asked in some other way) (ANS:420) 3marks

8) find a taxi no. which leaves one as remainder with 2,3,4,5,6 & is divisible by 11..
ANS: 121

9) X Y Z X Y Z
+ A B & - A B
--------------- ---------------
C D E F B G A
Find X,Y,Z,G.
Ans:
9 4 5 9 4 5
+ 7 8 & - 7 8
--------------- ---------------
1 0 2 3 8 6 7
X=9, Y=4, Z=5, G=6.

10) someones driving a car.. sees a mile stone with a two digit no. on it (km)… after one hour sees a mile stone with the same digits but in reversed order… again after one hour he sees the no. back again wid a 0 in the middle.. find the speed of the car..
ANS: 45km/hr

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