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TEST DATE : 08 MAY 2005
LOCATION : CHENNAI
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Hi friends,
I
attended Infosys written test on
8-5-2005 at Chennai and got short-listed. I thank Chetana madam a lot
for her service. If it was not for this group, I wudnt have cleared
the written test. Since I didn't have much time, I prepared only from
the previous papers given by the group members now and then and that
has really helped. Also, I thank all the people who shared their
experience with the group. It gave me the much needed confidence. So
thanks once again.
My
HR interview was scheduled on 9-5-2005. But since I had my university
semester examination on 9th, I couldn't attend it. I conveyed my
problem to one of the Infosys staffs at the test centre and was given
assurance that my interview would be re-scheduled to sometime around
May 22nd.
As
for the others, friends, I am attaching the question paper with the
answers. I think I got all the 10 puzzles right.
Regards...Archana
QUESTIONS
PAPER - MAY 8, 2005
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1)
There was a cycle race going on. 1/5th of the those in front of a
person and 5/6th of those behind him gives the total number of
participants. How many people took part in the race?
(3 marks)
Ans : 31
Approach:
Let
the total number of participants be X
So,
[(x-1)/5 + 5(x-1)/6] = X
2)
Today is Saturday. A person wants to meet a lawyer and as that lawyer
is busy he asks him to come three days after the before day of the day
after tomorrow? On which day the lawyer asks the person to come?
Ans: Wednesday
Approach:
Today=Saturday
Day
after tomorrow=Monday
Day
before day after tomorrow=Sunday
Three
days after the day before the day after tomorrow=Wednesday
3)
A person is 80 years old in 490 and only 70 years old in 500 in which
year is he born?
Ans: 570 BC
Approach:
Since
the age gets decreased with the years, the years should definitely be
in BC and hence u should increment the years as u decrease the age.
Therefore if he is 70 years old in 500BC, he would have born on 570
BC!!
4)
A man enquires a person about the past 5 days temperatures at 12 noon
in that region. The other replies that he doesn't remember the actual
figures but there was a different temperature on each day and that
their product gives 12. Assuming the temperature to the nearest degree
what are the temperatures on the five days?
Ans: -1,-2,1,2,3
Approach:
We
know that the smallest two integers that can give a product of 12 is
3*4 which is spilt up as 2*2*3. But no temperature is the same...hence
use -2 instead of 2. Now the product becomes -12. Choose the other
temperatures such that value of the product does not change but only
the sign changes. So naturally, the other two options are -1 and 1.
5)
A cube is painted. It is cut into 27 cubes with three straight lines.
Find the number of cubes with
a. 3 sides painted
b. 2 sides painted
c. 1 side painted
d. no painted sides
Ans: a. 8 (4
corner cubes + 4 corner cubes)
b.
12 (center cubes at each EDGE)
c. 6 (center
cubes at each FACE)
d.
1 (cube at the center of the original cube)
Approach
Draw
a cube (with front, top and side faces, dont draw the inner lines.
that'll confuse) cut it into 27 cubes. thats done by drawing 3
horizontal and 3 vertical lines on the front face of the cube. extend
those lines along the other two faces. then COUNT accordingly.
6)
A person travels at a speed of 10 mph from one city to another.
However while returning as there was
not much traffic. He came
with a speed of 15mph. what is his average speed?
Ans: 12 mph
Approach:
Let
the distance be X
Distance/
Time=Speed
Time
taken for forward journey=X/10
Time
taken for return journey=X/15
Total
time for to and fro journey T =[(X/10)+(X/15)]
Total
distance covered D=2X
Hence,
average speed= D/T = 12mph
7)
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. He
lied".
a) Is the child a boy or a girl
b) Which parent answered first?
Ans: The child is a girl
and father answered first.
Approach:
Take
the statement "The child is a girl. He lied". If 'He lied'
is true, then the child is a girl is a false. Likewise, is 'He lied'
is false, then the child is a girl is true => The second statement
was given by the child's mother and hence the father answered first.
Take
the statement "The
child says,"I am a boy". Since the father always speak the
truth, the child should have said that he was a boy. But then the
child lies, so he cannot be a boy => the child was a girl.
(Confused? Try reasoning it out yourself, u'll understand the logic)
8)
There is a couple and they have many children. 7 of them dont eat
spinach. 5 ot them dont eat carrot. 6 of them dont eat beans. 4 of
them dont eat either spinach or carrot.
2 of them eat neither spinach or beans and 3 of them eat
neither carrot or beans. and 1 dont eat spinach, carrot or beans. How
many children r there in total?
Ans: 9 children
Approach:
4
of them don't eat spinach or carrot => 4 of them eat beans alone.
2
of them don't eat spinach or beans => 2 of them eat carrots alone.
3
of then don't eat carrot or beans =>3 of them eat spinach alone.
Total
children=4+2+3=9
(If
some other reasoning approach was chosen, the remaining three
statements could be used. But this one
is simple and I am sure that the answer is right. Try out the
other approaches anyway)
9)
There are three tribes in a village. The Sorobean always speaks the
truth. The Narobean always lies and the Midorean speaks truth and
false alternatively. From the following statements, find out who
belongs to which tribe.
A:
I am a Sorobean
B is a Narobean
B:
I am a Sorobean
C is a Midorean
C:
I am a Sorobean
A is a Midorean
Ans:
A -Midorean, B-Narobean, C-Sorobean
Approach:
Simple
! Assume one as Sorobean and try to satisfy the conditions. All the
above statement get satisfied only for the above answer. I think the
statements that I have given are right...am sorry if its wrong but the
answer to this puzzle in the Infy paper is the one that I have given
above.
10)
A flight is scheduled to depart at 12 midnight.
A family arrived at the airport 10 hours late and missed the
flight. If they had arrived 4 hours earlier, they would have reached
the airport 2 hours earlier to the departure of the flight. (Something
like that...not sure of the values). What is the present time ?
Ans: 4PM
Approach:
Let
the present time be X
If
they r 4 hours early, they arrive at airport at X+(10-4)=X-6.
The
train leaves at 12 midnight => total duration from morning 12am 10
12 midnight=24 hours.
x-6
is 2 hours earlier to 12Pm =>24-(x-6)=2
X=16
hours=4PM
The
paper was very easy compared to all the other papers. Have confidence
and clear analytical
thinking...u can clear Infy written test.
ALL
THE BEST FOR THE INFY ASPIRANTS!!!!!
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