Thursday, February 23, 2012

Infosys Placement Paper 2011...Part1

1) If a die has 1,6 and 3,4 and 2,5 opposite each other how many such dies can be made.

2) There are three boxes , In one box Two white balls , In two box 2 black balls In three box
1 white &1 black
The lables on the boxes are not correct.Then you have to open one box and to find the colour
of the balls in all boxes.

Solution: Open the box labled black& white If white balls are there then the box labled with
white balls
contain black balls and labled with black balls contain one black and one white ball and
viceversa
if two black ballsare there.

3) there are containing 5 , 7 , 14 , 16 , 18 , 29 balls of either red or blue in colour. Some boxes
contain only red balls and others contain only blue . One sales man sold one box out of them
and then he says " I have the same number of red balls left out as that of blue ".
Which box is the one he solds out ?

Ans : total no of balls = 89 and (89-29 /2 = 60/2 = 30
and also 14 + 16 = 5 + 7 + 18 = 30

4) A chain is broken into three pieces of equal lenths containing 3 links each. It is taken to a
backsmith to join into a single continuous one . How many links are to to be opened to make
it ?
Ans : 2.

5) when the actual time pass 1hr wall clock is 10 min behind it when 1 hr is shown by wall
clock, table clock shows 10 min ahead of it when table clock shows 1 hr the alarm clock goes
5min behind it, when alarm clock goes 1 hr wrist watch is 5 min ahead of it assuming that all
clocks are correct with actual time at 12 noon what will be time shown by wrist watch after 6
hr
Ans---5:47:32.5
(n X 60 )50/60 X 70/60 X 55/60 X 65/60

6) complete the following
a. $ * * $ @ * ? ?
# @ @ # # $ ? ? some what simillar like this...but not clear.
b. 1 , 3 , 7 , 13 , 21 , __ , 43 Ans : 31
c. 1, 3, 9, __ , 16900

7) A girl took part in a (some) game with many others in a circular closed circuit. After
pedaling for several minutes, he found that 1/3th of the cyclists ahead of her and 3/4th of the
cyclists behind him together formed the total no. of participants. How many were
participating in the race?

8) OF all pets i have, except 2 all are rabbits
OF all pets i have, except 2 all are fish
OF all pets i have, except 2 all are cats
How many rabbits, fish and cats are there?

9) given
carpenter + painter = 1100
painter + electrician = 3200
electrician + plumber = 5100
plumber + mason = 2200
mason + labour = 3000
labour + painter = 1100
find every person's cash? (i dont know the exact amount mentioned above.)

10) out of 30 questions, the three persons A,B & C answered 45 correct answers, B answered
55% of A, B and C together answered 25 % more of what A answered.
Find how many answers each answered?

11) Jim,Bud and sam were rounded up by the police yesterday. because one of them was
suspected of having robbed the local bank. The three suspects made the following statements
under intensive questioning.
Jim: I'm innocent
Bud: I'm innocent
Sam: Bud is the guilty one.
If only one of the statements turned out to be true, who robbed the bank?

12) There are two containers on a table. A and B . A is half full of wine, while B, which is
twice A's size, is onequarter full of wine . Both containers are filled with water and the
contents are poured into a third container C. What portion of container C's mixture is wine ?

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