# Placement Papers - Infosys

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### INFOSYS PAPER - 16 JUL 2006 - CHENNAI

Posted By : M.Naresh Rating : +6, -0
QUESTION 1                                4 marks
There were 2 systems A n B.14 degrees in A is equivalent to 36 in System B and 133 in A is equivalent to 87 in B. now what is the Temperature where they both r equal?
Ans: 51.25 (conversion A=(7/3)B-70)

QUESTION 2                                 3 marks
A dice has faces 1 against 6, 3 against 5 and 2 against 4 always. How many such combinations of faces are possible in a dice?
Ans : 24

Keeping 1 and 6 fixed, we can have two combinations of 6 and 3, and two of 2 and 4  that means four. And interchanging 1 and 6 we can have two more combinations that means with one pair 8 combinations are there : 4*2=8. Similarly with other two also 8 combos. So in all 8*3=24 combos are possible

QUESTION 3                                  4 marks
A man walks at 4 kmph on level ground. At 3kmph to climb hill, 6kmph for downhill and back 4kmph on level ground. He started at 3 pm and came at 9pm. What is the distance covered on one way?
Ans:12 km
Solution:     Let plain road = x km
And hill road = y km
? x/4 + y/3 + y/6 + x/4 = 6
? x/2 + y/2 = 6
? x + y =12

QUESTION 4                                8 marks
There is a peculiar island where people speak a strange language called 'Kubi'. The men always speak truth and a women never say two 2 consecutive truth or false statements, that is, if she says truth statement once then she says false statement next and vice versa. The boys and girls always lie. One day I asked a child "Are you a boy or girl?" and the child replied in Kubi. Since I didn't know the language,
I asked the child's parents what it means. One of the parents said "The child says, I am a boy"  and the other said that "The child is a girl. Kubi lied".
a) Is the child a boy or a girl
Ans: The child is a girl and father answered first.

QUESTION 5                                    4 marks
There were two clock one is getting slow by two minutes/hr and another one is gaining 1 minute every hour and exactly after how many hours there two clock has a 1hr difference. So how long clock runs?
Ans (20hr)

QUESTION 6                                    4 marks
If horse runs half his distance with 12 miles per hour with no load, after that it carries some load and speed reduced to 4 miles per hour. What his average speed?

QUESTION 7                                    3 marks
If u have 100 consecutive set of joins. And make that 2 set something like that.. (its like Shakunthala devi gold maker problem)
Ans: 99

QUESTION 8
Fill the missing no in the series                         6 marks
a)    1,2,3,5,8,16,---
b)    1,2, 3, 8, .., 224

QUESTION 9                                5 marks
This problem deals with some file folder with 5% probality.. How many folder he took?
It is also repeated (but it si old )  may be ans is 10

QUESTION 10
A jeweler makes a window display. He has 7 gems of which he display 6 at a time.  3 on left pane and 3 on right with following conditions.
The Gems are armanet, diamond, sapphire, garnet, opal, and ruby.
Armanet should alwaz be displayed on right.
diamond alwaz on right
Ruby should not be displayed with diamond or garnet
Emerald and sapphire should be alwaz displayed together.
i. What are the possible combinations for left pane?
a)      armanet,garnet,opal
b)      armanet,ruby,garnet
c)      diamond,emerald,sapphire
d)      armanet,emerald,garnet
ii. What are the possible combinations for the right pane?
a)      Diamond,garnet,opal
b)      Diamond,ruby,opal
c)      Armanet,emerald,sapphire
d)      Diamond,garnet,ruby
iii. If diamond, opal.. in right pane what is the possible combntn in left pane. 4 or 5 options
iv. If 2 other gems in one pane, possible combi in the other. I don't remember exactly  But ans for the whole question was like
1.      a) (NOT SURE)
2.      a)  (NOT SURE)
3.      b)  (NOT SURE)
4.     e)   (NOT SURE)
ONE OF MY FRIEND TOLD THAT ANS IS
1    B
2    B
3    A
4    C