INFOSYS PLACEMENT PAPERS ----- Placement Paper 4

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Infosys Test #1

1. Father's age is three years more than three times the
son's age.
After three years, father's age will be ten years more
than twice
the
son's age.
What is the father's present age.

Ans: 33 years. (2 marks)

2. Find the values of each of the alphabets.

N O O N
S O O N
+ M O O N
----------
J U N E

Ans: 9326 (2 marks)

3. There are 20 poles with a constant distance between
each pole
A car takes 24 second to reach the 12th pole.
How much will it take to reach the last pole.

Ans: 41.45 seconds (2 marks)
Let the distance between two poles = x
Hence 11x:24::19x:?

4. A car is travelling at a uniform speed.
The driver sees a milestone showing a 2-digit number.
After travelling for an hour the driver sees another
milestone
with the
same digits in reverse order.
After another hour the driver sees another milestone
containing
the
same two digits.
What is the average speed of the driver.

Ans: 45 kmph (4 marks)

5. The minute and the hour hand of a watch meet every 65
minutes.
How much does the watch lose or gain time and by how
much?

Ans: Gains; 5/11 minutes (4 marks)

6. Ram, Shyam and Gumnaam are friends.
Ram is a widower and lives alone and his sister takes
care of him.
Shyam is a bachelor and his neice cooks his food and
looks after
his
house.
Gumnaam is married to Gita and lives in large house in
the same
town.
Gita gives the idea that all of them could stay
together in the
house
and share monthly expenses equally.
During their first month of living together, each
person
contributed
Rs.25.
At the end of the month, it was found that Rs 92 was
the expense so
the
remaining amount was distributed equally
among everyone.
The distribution was such that everyone recieved a
whole number of
Rupees.
How much did each person recieve?

Ans. Rs 2 (4 marks)
(Hint: Ram's sister, Shyam's neice and Gumnaam's
wife are the
same
person)

7. Four persons A, B, C and D are playing cards.
Each person has one card, laid down on the table below
him, which
has
two different colours on either side.
The colours visible on the table are Red, Green, Red
and Blue.
They see the color on the reverse side and give the
following
comment.

A: Yellow or Green
B: Neither Blue nor Green
C: Blue or Yellow
D: Blue or Yellow

Given that out of the 4 people 2 always lie find out the
colours on the
cards each person.

8.

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Infosys Test #2

1. At 6'o a clock ticks 6 times.
The time between first and last ticks is 30 seconds.
How long does it tick at 12'o clock.

Ans: 66 sec. (2 marks)

2. Three friends divided some bullets equally.
After all of them shot 4 bullets the total number of
bullets
remaining
is equal to the bullets each had after division.
Find the original number divided.

Ans: 18 (2 marks)

Initially . x x x
Now x-4 x-4 x-4
Equation is 3x-12 = x

3. A ship went on a voyage.
After it had travelled 180 miles a plane statrted with
10 times the
speed of the ship.
Find the distance when they meet from starting point.

Ans: 200miles. (2 marks)
Distance travelled by plane = 1/10 distance
travelled by ship +
180

4. Complete the Table given below:

Three football teams are there. Given below is the
group table.
Fill
in the x's

Played
Won
Lost
Draw
Goals For
Goals Against
A
2
2
x
x
x
1
B
2
x
x
1
2
4
C
2
x
x
x
3
7

Ans: The filled table is given
below (4
marks)

Played
Won
Lost
Draw
Goals For
Goals Against
A
2
2
0
0
7
1
B
2
0
1
1
2
4
C
2
0
1
1
3
7

5. There are 3 societies A, B, C.
A lent cars to B and C as many as they had already.
After some time B gave as many tractors to A and C
as many as they have. After sometime c did the same thing.
At the end
of
this transaction each one of them had 24.
Find the cars each orginally had.

Ans: A had 39 cars, B had 21 cars & C had 12
cars (4
marks)

6. There N stations on a railroad.
After adding X stations on the rail route 46 additional
tickets
have to
be printed.
Find N and X.

Ans. x=2 and N=11

Let initially, N(N-1) = t
After adding, (N+X)(N+X-1) = t+46
By trail and error
method (4
marks)

7. Given that April 1 is tuesday.
A, B, C are 3 persons told that their farewell party
was on

A - May 8, thursday
B - May 10,tuesday
C - June 5, friday

Out of A, B, C only one made a completetly true statement
concerning
date,day and month
The other told two one told the day right and the other
the date
right..
What is correct date, month, day.

Ans: B - (May 10) SUNDAY
C - June 6
(Friday). (5
marks)

8. The Bulls, Pacers, Lakers and Jazz ran for a contest.
Anup, Sujit, John made the following statements
regarding results.

Anup said either Bulls or Jazz will definitely win
Sujit said he is confident that Bulls will not win
John said he is confident that neither Jazz nor Lakers
will win

When the result cameit was found that only one of the above
three had
made a
correct statement.
Who has made the correct statement and who has won the
contest.

Ans: Sujith; Lakers (5marks )

9. Five people A ,B ,C ,D ,E are related to each other.
Four of them make one true statement each as follows.

(i) B is my father's brother.
(ii) E is my mother-in-law.
(iii)C is my son-in-law's brother
(iv)A is my brother's wife.

Ans: (i) D
(ii) B
(iii) E
(iv) C (10 marks)

10. Some statements are given below:

L says all of my other four friends have money
M says that P said that exactly one among them has
money
N says that L said that precisely two among them have
money
O says that M said that three of the others have money
P, L and N said that they have money

All the above statement are false..
Who has money & who doesn't have any money?

(5 marks)

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Infosys Test #3

Home

1. Mr.Mathurs jewels have been stolen from his bank
locker .
The bank has lockers of 12 people which are arranged in
an array of
3
rows and 4 columns like:

1
2
3
4
5
6
7
8
9
10
11
12

The locker belonging to JONES was to the right of
BLACK'S locker
and
directly above MILLAR'S.
BOOTH'S locker was directly above MILLAR'S.
SMITH'S locker was also above GRAY's (though not
directly).
GREEN'S locker was directly below SMITH'S.
WILSON'S locker was between that of DAVIS and BOOTH.
MILLAR'S locker was on the bottom row directly to the
right of
HERD'S.
WHITE'S locker was on the bottom right hand corner in
the same
column
as BOOTH'S.

Which box belonged to Mr.Mathurs?

Ans: Box number 9 belongs to Mr.Mathurs.

2. Fifty minutes ago if it was four times as many minutes
past three
o'clock,how many minutes is it to six o'clock?

Ans: Twenty six minutes.

3. If a clock takes 7seconds to strike 7, how long will the
same clock
take
to strike 10?

Ans: The clock strikes for the first time at the start and
takes 7
seconds
for 6 intervals-thus for one interval time
taken=7/6.
Therefore, for 10 seconds there are 9 intervals and
time taken
is
9*7/6=10 and 1/2 seconds.

4. Three criminals were arrested for shop lifting.
However, when interrogated only one told the truth in
both his
statements, while the other two each told one true
statement and one lie.
The statements were:

ALBERT :(a)Chander passed the merchandise. (b)Bruce
created the
diversion.
BRUCE :(a)Albert passed the merchandise. (b)I
created the
diversion.
CLIVE :(a)I took the goods out of the shop. (b)
Bruce passed
them
over.

Ans: Albert passed the goods.Bruce created the
diversion..Clive took
the
goods out of the shop.

5. Everyday in his business a merchant had to weigh amounts
from 1 kg
to 121
kgs, to the nearest kg.
What are the minimum number of weight required and how
heavy should
they
be?

Ans: .The minimum number is 5 and they should weigh
1,3,9,27 and 81
kgs.

6. A hotel has 10 storeys.Which floor is above the floor
below the
floor,
below the floor above the floor, below the
floor above the fifth.

Ans: The sixth floor.

7. Seven members sat around a table for three days for a
conference.
The member's names were Abhishek, Amol, Ankur,
Anurag,Bhuwan ,Vasu
and
Vikram.
The meetings were chaired by Vikram.
On the first evening members sat around the table
alphabetically.
On the following two nights, Vikram arranged the
seatings so that
he
could have Abhishek as near to him as
possible and abesent minded Vasu as far away as he
could.
On no evening did any person have sitting next to him a
person who
had
previously been his neighbour.
How did Vikram manage to seat everybody to the best
advantage on
the
second and third evenings?

Ans:
Second evening:Vikram,Ankur,Abhishek,Amol,Vasu,Anurag and
Bhuwan.
Third
evening :Vikram,Anurag,Abhishek,Vasu,Bhuwan,Ankur,Amol.

8. Two trains start from stations A and B spaced 50 kms
apart at the
same
time and speed.
As the trains start, a bird flies from one train
towards the other
and
on reaching the second train, it flies back to the
first train.This is repeated till the trains collide.
If the speed of the trains is 25 km/h and that of the
bird is
100km/h.
How much did the bird travel till the collision.

Ans: 100 kms.

9. Four prisoners escape from a prison.
The prisoners, Mr East, Mr West, Mr South, Mr North
head towards
different directions after escaping.
The following information of their escape was supplied:

The escape routes were The North Road, South Road,
East Road and
West
Road.
None of the prisoners took the road which was their
namesake.
Mr.East did not take the South Road
Mr.West did not the South Road.
The West Road was not taken by Mr.East

What road did each of the prisoners take to make their
escape?

Ans: Mr.East took the North Road
Mr.West took the East Road
Mr.North took the South Road
Mr.South took the West Road.

10. Complete the series:
5, 20, 24, 6, 2, 8, ?

Ans: 12 (as 5*4=20, 20+4=24, 24/4=6, 6-4=2, 2*4=8, 8+4=12).

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Infosys Test #4

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1. Replace each letter by a digit.
Each letter must be represented by the same digit and
no beginning
letter of a word can be 0.

O N E
O N E
O N E
O N E
-------
T E N

Ans: 0 =1, N = 8 ,E = 2, T = 7

2. Ann, Boobie, Cathy and Dave are at their monthly
business meeting.
Their occupations are author, biologist, chemist and
doctor, but
not
necessarily in that order.
Dave just told the biologist that Cathy was on her way
with
doughnuts.
Ann is sitting across from the doctor and next to the
chemist.
The doctor was thinking that Boobie was a goofy name
for parent's
to
choose,but didn't say anything.
What is each person's occupation?

Ans: Since Dave spoke to the biologist and Ann sat next to
the chemist
and
across the doctor, Cathy must be the author
and Ann the biologist.
The doctor didn't speak, but David did, so Bobbie
is the doctor
and
Dave the chemist.

3. Sometime after 10:00 PM a murder took place.
A witness claimed that the clock must have stopped at
the time of
the
shooting.
It was later found that the postion of both the hands
were the same
but
their positions had interchanged.
Tell the time of the shooting (both actual and claimed).

Ans: Time of shooting = 11:54 PM
Claimed Time = 10:59 PM

4. Next number in the series is
1 , 2 , 4 , 13 , 31 , 112 , ?

Ans: 224.
No number has digits more than 4. All of them are
1 , 2, 4, 8 ,
16 ,
32 , 64 converted to numbers in base 5

5. Shahrukh speaks truth only in the morning and lies in
the afternoon,
whereas Salman speaks truth only in the afternoon. A
says that B is Shahrukh. Is it morning or afternoon and who
is A -
Shahrukh
or Salman.

Ans: Afternoon ; A is Salman.

6. Two trains starting at same time, one from Bangalore to
Mysore and
other
in opposite direction arrive at their
destination 1 hr and 4 hours respectively after passing
each other.
How
nuch faster is one train from other?

Ans: Twice

7. There are 6 volumes of books on a rack kept in order (
ie vol.1,
vol. 2
and so on ).
Give the position after the following changes were
noticed.

All books have been changed
Vol.5 was directly to the right of Vol.2
Vol.4 has Vol.6 to its left and both weren't at
Vol.3's place
Vol.1 has Vol.3 on right and Vol.5 on left
An even numbered volume is at Vol.5's place

Find the order in which the books are kept now.

Ans: 2 , 5 , 1 , 3 , 6 , 4

8. I bought a car with a peculiar 5 digit numbered licence
plate which
on
reversing could still be read.
On reversing value is increased by 78633.Whats the
original number
if
all digits were different?

Ans: Only 0 1 6 8 and 9 can be readupside down.So on
rearranging these
digits we get the answer as 10968

9. The shape in the sketch below is that of a square
attached to half
of a
similar square.Divide it into four equal pieces

Ans: Hint : the figure can be divided into 12 equal
triangles

10. Supposing a clock takes 7 seconds to strike 7. How
mlong will it
take to
strike 10?

Ans: 10 1/2 seconds.

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Infosys Test #5

1) 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.

Ans: 8+1=9

2) A soldier looses his way in a thick jungle. At random he
walks from
his
camp but mathematically in an interesting fashion.
First he walks one mile East then half mile to North. Then
1/4 mile to
West,
then 1/8 mile to South and so on making a loop.
Finally how far he is from his camp and in which direction.

Ans: Distance travelled in north and south directions
1/2 - 1/8 + 1/32 - 1/128 + 1/512 - and so on
= 1/2/((1-(-1/4))
Similarly in east and west directions
1- 1/4 + 1/16 - 1/64 + 1/256 - and so on
= 1/(( 1- ( - 1/4))
Add both the answers

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

Ans: 2 power 9 x 5 power 9

4) Conversation between two mathematcians:
First : I have three childern. The product of their ages is
36.
If you sum their ages, it is exactly same as my
neighbour's
door
number on my left.
The second mathematician verfies the door number and says
that it is
not
sufficient.
Then the first says " Ok one more clue is that my youngest
is really
the
youngest". Immmediately the second mathematician
answers .
Can you answer the question asked by the first
mathematician?
What are the childeren ages?

Ans 1,6 and 6

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

Ans : 383 + 1 = 384

6) 500 men are arranged in an array of 10 rows and 50
columns according
to
their heights.
Tallest among each row of all are asked to fall out.
And the shortest among them is A.
Similarly after resuming that to their original
podsitions that
the
shortest among each column are asked to fall out.
And the tallest among them is B .
Now who is taller among A and B ?

Ans A

7) A person with some money spends1/3 for cloths, 1/5 of
the remaining
for
food and 1/4 of the remaining for travel.
He is left with Rs 100/- .
How much did he have with him in the begining ?

Ans: Rs 250/-

8) There are six boxes 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

9) 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.

10) Grass in lawn grows equally thick and in a uniform
rate.
It takes 24 days for 70 cows and 60 days for 30 cows
to eat the
whole
of the grass.
How many cows are needed to eat the grass in 96
days.?

Ans : 20
g - grass at the beginning
r - rate at which grass grows, per day
y - rate at which one cow eats grass, per day
n - no of cows to eat the grass in 96 days
g + 24*r = 70 * 24 * y
g + 60*r = 30 * 60 * y
g + 96*r = n * 96 * y
Solving, n = 20.

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Infosys Test #6

1. From a vessel, 1/3rd of the liquid evaporates on the
first day.
On the second day 3/4th of the remaining liquid
evaporates.
What fraction of the volume is present at the end of
the second
day.

Ans: 50%

2. An orange glass has orange juice and white glass has
apple juice
both of
equal volumes.
50ml of the orange juice is taken and poured into the
apple juice.
50ml from the white glass is poured into the orange
glass.
Of the two quantities, the amount of apple juice in the
orange
glass and
the amount of orange juice in the white glass,
which one is greater and by how much?

Ans: The two quantities are equal

3. There is a 4 inch cube painted on all sides.
This is cut down into of 1 inch cubes.
What is the no of cubes which have no pointed sides.

Ans: 8

4. Sam and Mala have a conversation.

Sam says I am certainly not over 40
Mala says I am 38 and you are atleast 5 years older
than me
Now Sam says you are atleast 39

All the statements by the two are false.
How old are they really?

Ans: Mala = 38 yrs
Sam = 41 yrs.

5. Ram Singh goes to his office in the city, every day from
his
suburban
house.
His driver Gangaram drops him at the railway station in
the morning
and
picks him up in the evening.
Every evening Ram Singh reaches the station at 5 O'
Clock.
Gangaram also reaches at the same time.
One day Ram Singh started early from his office and
came to the
station
at 4 O' Clock.
Not wanting to wait for the car he starts walking home.
Mangaram
starts
at normal time, picks him up on the way
and takes him back house, half an hour early.
How much time did Ram Singh walk?

6. In a railway station, there are two trains going.
One in the harbour line and one in the main line, each
having a
frequency
of 10 minutes.
The main line service starts at 5 o'clock and the
harbour line
starts at
5.02A.M.
A man goes to the station every day to catch the first
train that
comes.
What is the probability of the man catching the first
train?

Ans: 0.8

7. A family X went for a vacation.
Unfortunately it rained for 13 days when they were
there.
But whenever it rained in the mornings, they had clear
afternoons
and
vice versa.
In all they enjoyed 11 mornings and 12 afternoons.
How many days did they stay there totally?

Ans: 18

8. A survey was taken among 100 people to find their
preference of
watching
T.V. programmes.
There are 3 channels. Given the no of people who watch

at least channel 1
at least channel 2
at least channel 3
no channels at all
atleast channels 1and 3
atleast channels 1 and 2
atleast channels 2 and 3

Find the no of people who watched all three.

9. Albert and Fernandes have two leg swimming race.
Both start from opposite ends of the pool.
On the first leg, the boys pass each other at 18 m
from the deep
end
of the pool.
During the second leg they pass at 10 m from the
shallow end of
the
pool.
Both go at constant speed but one of them is faster.
Each boy rests for 4 seconds at the end of the first
leg.
What is the length of the pool?

10. Each alphabet stands for one digit in the following
multiplication.

T H I S
x I S
---------
X F X X
X X U X
------------
X X N X X
------------

What is the maximum value T can take?

Ans: T max value = 4

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Infosys Test #7

1.An escalator is descending at constant speed.
A walks down and takes 50 steps to reach the bottom.
B runs down and takes 90 steps in the same time as A
takes 10 steps.
How many steps are visible when the escalator is not
operating?

Ans: 150 steps

2. Every day a cyclist meets a train at a particular
crossing.
The road is straight before the crossing and both are
travelling in
the
same direction.
The cyclist travels with a speed of 10 Kmph.
One day the cyclist comes late by 25 min. and meets the
train 5km
before
the crossing.
What is the speed of the train?

Ans: 60 kmph

3. There are five persons with surnames Mukherjee, Misra,
Iyer, Patil
and
Sharma.
There are 4 persons having first or middle name of
Kumar, 3 persons
with
Mohan, 2 persons with Dev and 1 Anil.
Either Mukherjee and Patil have a first or middle name
of Dev or
Misra
and Iyer have their first or middle name of Dev.
Of Mukherkjee and Misra, either both of them have a
first or middle
name
of Mohan or neither have a first or
middle name of Mohan.
Either Iyer or Sharma has a first or middle name of
Kumar but not
both.
Who has the first or middle name of Anil?

Ans: Kumar Misra Dev
Mohan Iyer Dev
Kumar Patil Mohan
Mohan Sharma Kumar

4. Boys are allowed to watch football at C.V.Raman
auditorium
subjected to
conditions.

The boy over age 16 can wear overcoat
No boy over age 15 can wear cap
To watch the football either he has to wear overcoat
or cap or
both
A boy with an umberella or above 16 or both cannot
wear sweater.
Boys must either not watch football or wear sweater.

What is the appearence of the boy who is watching
football.

5. A bird keeper has got P pigeons, M mynas and S sparrows.
The keeper goes for lunch leaving his assistant to
watch the birds.

Suppose p=10, m=5, s=8 when the bird keeper comes
back, the
assistant
informs the x birds have escaped. The bird
keeper exclaims: "Oh no! All my sparrows are gone."
How many birds flew away?
When the bird keeper comes back, the assistant told
him that x
birds
have escaped. The keeper realised that atleast 2
sparrows have escaped.
What is minimum no of birds that can escape?

6. Answer the following questions based on the conditions
from the
choices
A, B, C, D, E as described below:
(A) if a definete conclusion can be drawn from condition 1
(B) if a definete conclusion can be drawn from condition 2
(C) if a definete conclusion can be drawn from condition 1
and 2
(D) if a definete conclusion can be drawn from condition 1
or 2
(E) no conclusion can be drawn using both conditions

person 1 says N<5
person says N>5
person 3 says 3N>20
person 4 says 3N>10
person 5 says N<8

What is the value of N?

a) 1. No of persons who speak false being less than no of
persons who
tells
the truth.
2. Person 2 is telling the truth.

b) 1. no of persong telling the truth is greater than no of
persons
telling
lies
2. person 5 is telling the truth.

7. There are N coins on a table and there are two players A
& B.
You can take 1 or 2 coins at a time.
The person who takes the last coin is the loser.
A always starts first.

If N=7
(a) A can always win by taking two coins in his first
chanse
(b) B can win only if A takes two coins in his first
chance.
(c) B can always win by proper play
(d) none of the above
2. A can win by proper play if N is equal to
(a) 13 (b) 37 (c) 22 (d) 34 (e) 48
Ans: (e.)
3. B can win by proper play if N is equal to
(a) 25 (b)26 (c) 32 (d) 41 (e) none
4. if N<4, can A win by proper play always?
(a) Yes (b) No

8. Two twins have vertain peculiar charcteristics.
One of them always lies on Monday, Wednesday, Friday.
The other always lies on Tuesdays, Thursdays and
Saturdays.
On the other days they tell the truth. You are given a
conversation.

Person A-- today is Sunday my name is Anil
Person B -- today is Tuesday, my name is Bill

What day is today?

Ans: Today is Tuesday.

9. There is a safe with a 5 digit number as the key.
The 4th digit is 4 greater than second digit, while 3rd
digit is 3
less
than 2nd digit.
The 1st digit is thrice the last digit.
There are 3 pairs whose sum is 11.
Find the number.

Ans: 65292

10. A hotel has two wings,the east wing and the west wing.
Some east wing rooms but not all have an ocean view.
All west wing rooms have a harbour view.
The charge for all rooms is identical, except as
follows :

Extra charge for all harbour view rooms on or above
the 3rd floor
Extra charge for all ocean view rooms except those
without balcony
Extra charge for some harbour rooms on the first two
floor & some
east
wing rooms without ocean view but
having kitchen facilities.

Which of the following cannot be determined on the basis of
the
nformation
given:

I. Whether there are any rooms without a balcony for
which an extra
charge
is imposed.
II. Whether any room without a kitchen or a view involves
an extra
charge.
III. Whether two extra charges are impsed for any room.

(A) I only
(B) II only
(C) III only
(D) II and III only
(E) I, II and III

(This question is from 1999 Barrons GRE Guide model Test 3 -
section 6,
question 22)

Ans: (A)

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ENGLISH:
1.Reading comprehension = 5 questions
2.correction of sentencs=5
3.correct verb completion in the senteces=10
4.spellings
5.sentecnes(exact meanings that match the sentence)

and there are 2 other section in English .

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Infosys Test #1

1. Father's age is three years more than three times the
son's age.
After three years, father's age will be ten years more than
twice the
son's age.
What is the father's present age.

Ans: 33 years. (2 marks)

2. Find the values of each of the alphabets.

N O O N
S O O N
+ M O O N
----------
J U N E

Ans: 9326 (2 marks)

3. There are 20 poles with a constant distance between each
pole
A car takes 24 second to reach the 12th pole.
How much will it take to reach the last pole.

Ans: 41.45 seconds (2 marks)
Let the distance between two poles = x
Hence 11x:24::19x:?

4. A car is travelling at a uniform speed.
The driver sees a milestone showing a 2-digit number.
After travelling for an hour the driver sees another
milestone with the
same digits in reverse order.
After another hour the driver sees another milestone
containing the
same two digits.
What is the average speed of the driver.

Ans: 45 kmph (4 marks)

5. The minute and the hour hand of a watch meet every 65
minutes.
How much does the watch lose or gain time and by how much?

Ans: Gains; 5/11 minutes (4 marks)

6. Ram, Shyam and Gumnaam are friends.
Ram is a widower and lives alone and his sister takes care
of him.
Shyam is a bachelor and his neice cooks his food and looks
after his
house.
Gumnaam is married to Gita and lives in large house in the
same town.
Gita gives the idea that all of them could stay together in
the house
and share monthly expenses equally.
During their first month of living together, each person
contributed
Rs.25.
At the end of the month, it was found that Rs 92 was the
expense so the
remaining amount was distributed equally
among everyone.
The distribution was such that everyone recieved a whole
number of
Rupees.
How much did each person recieve?

Ans. Rs 2 (4 marks)
(Hint: Ram's sister, Shyam's neice and Gumnaam's wife are
the same
person)

7. Four persons A, B, C and D are playing cards.
Each person has one card, laid down on the table below him,
which has
two different colours on either side.
The colours visible on the table are Red, Green, Red and
Blue.
They see the color on the reverse side and give the
following comment.

A: Yellow or Green
B: Neither Blue nor Green
C: Blue or Yellow
D: Blue or Yellow

Given that out of the 4 people 2 always lie find out the
colours on the
cards each person.

8.

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Infosys Test #2

1. At 6'o a clock ticks 6 times.
The time between first and last ticks is 30 seconds.
How long does it tick at 12'o clock.

Ans: 66 sec. (2 marks)

2. Three friends divided some bullets equally.
After all of them shot 4 bullets the total number of
bullets remaining
is equal to the bullets each had after division.
Find the original number divided.

Ans: 18 (2 marks)

Initially . x x x
Now x-4 x-4 x-4
Equation is 3x-12 = x

3. A ship went on a voyage.
After it had travelled 180 miles a plane statrted with 10
times the
speed of the ship.
Find the distance when they meet from starting point.

Ans: 200miles. (2 marks)
Distance travelled by plane = 1/10 distance travelled by
ship + 180

4. Complete the Table given below:

Three football teams are there. Given below is the group
table. Fill
in the x's

Played
Won
Lost
Draw
Goals For
Goals Against
A
2
2
x
x
x
1
B
2
x
x
1
2
4
C
2
x
x
x
3
7

Ans: The filled table is given below (4
marks)

Played
Won
Lost
Draw
Goals For
Goals Against
A
2
2
0
0
7
1
B
2
0
1
1
2
4
C
2
0
1
1
3
7

5. There are 3 societies A, B, C.
A lent cars to B and C as many as they had already.
After some time B gave as many tractors to A and C
as many as they have. After sometime c did the same thing.
At the end of
this transaction each one of them had 24.
Find the cars each orginally had.

Ans: A had 39 cars, B had 21 cars & C had 12 cars (4
marks)

6. There N stations on a railroad.
After adding X stations on the rail route 46 additional
tickets have to
be printed.
Find N and X.

Ans. x=2 and N=11

Let initially, N(N-1) = t
After adding, (N+X)(N+X-1) = t+46
By trail and error method (4 marks)

7. Given that April 1 is tuesday.
A, B, C are 3 persons told that their farewell party was on

A - May 8, thursday
B - May 10,tuesday
C - June 5, friday

Out of A, B, C only one made a completetly true statement
concerning
date,day and month
The other told two one told the day right and the other the
date right..
What is correct date, month, day.

Ans: B - (May 10) SUNDAY
C - June 6 (Friday). (5 marks)

8. The Bulls, Pacers, Lakers and Jazz ran for a contest.
Anup, Sujit, John made the following statements regarding
results.

Anup said either Bulls or Jazz will definitely win
Sujit said he is confident that Bulls will not win
John said he is confident that neither Jazz nor Lakers will
win

When the result cameit was found that only one of the above
three had made a
correct statement.
Who has made the correct statement and who has won the
contest.

Ans: Sujith; Lakers (5marks )

9. Five people A ,B ,C ,D ,E are related to each other.
Four of them make one true statement each as follows.

(i) B is my father's brother.
(ii) E is my mother-in-law.
(iii)C is my son-in-law's brother
(iv)A is my brother's wife.

Ans: (i) D
(ii) B
(iii) E
(iv) C (10 marks)

10. Some statements are given below:

L says all of my other four friends have money
M says that P said that exactly one among them has money
N says that L said that precisely two among them have money
O says that M said that three of the others have money
P, L and N said that they have money

All the above statement are false..
Who has money & who doesn't have any money?

(5 marks)

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Infosys Test #3

1. Mr.Mathurs jewels have been stolen from his bank locker .
The bank has lockers of 12 people which are arranged in an
array of 3
rows and 4 columns like:

1
2
3
4
5
6
7
8
9
10
11
12

The locker belonging to JONES was to the right of BLACK'S
locker and
directly above MILLAR'S.
BOOTH'S locker was directly above MILLAR'S.
SMITH'S locker was also above GRAY's (though not directly).
GREEN'S locker was directly below SMITH'S.
WILSON'S locker was between that of DAVIS and BOOTH.
MILLAR'S locker was on the bottom row directly to the right
of HERD'S.
WHITE'S locker was on the bottom right hand corner in the
same column
as BOOTH'S.

Which box belonged to Mr.Mathurs?

Ans: Box number 9 belongs to Mr.Mathurs.

2. Fifty minutes ago if it was four times as many minutes
past three
o'clock,how many minutes is it to six o'clock?

Ans: Twenty six minutes.

3. If a clock takes 7seconds to strike 7, how long will the
same clock take
to strike 10?

Ans: The clock strikes for the first time at the start and
takes 7 seconds
for 6 intervals-thus for one interval time
taken=7/6.
Therefore, for 10 seconds there are 9 intervals and time
taken is
9*7/6=10 and 1/2 seconds.

4. Three criminals were arrested for shop lifting.
However, when interrogated only one told the truth in both
his
statements, while the other two each told one true
statement and one lie.
The statements were:

ALBERT :(a)Chander passed the merchandise. (b)Bruce created
the
diversion.
BRUCE :(a)Albert passed the merchandise. (b)I created the
diversion.
CLIVE :(a)I took the goods out of the shop. (b)Bruce passed
them
over.

Ans: Albert passed the goods.Bruce created the
diversion..Clive took the
goods out of the shop.

5. Everyday in his business a merchant had to weigh amounts
from 1 kg to 121
kgs, to the nearest kg.
What are the minimum number of weight required and how
heavy should they
be?

Ans: .The minimum number is 5 and they should weigh
1,3,9,27 and 81 kgs.

6. A hotel has 10 storeys.Which floor is above the floor
below the floor,
below the floor above the floor, below the
floor above the fifth.

Ans: The sixth floor.

7. Seven members sat around a table for three days for a
conference.
The member's names were Abhishek, Amol, Ankur,
Anurag,Bhuwan ,Vasu and
Vikram.
The meetings were chaired by Vikram.
On the first evening members sat around the table
alphabetically.
On the following two nights, Vikram arranged the seatings
so that he
could have Abhishek as near to him as
possible and abesent minded Vasu as far away as he could.
On no evening did any person have sitting next to him a
person who had
previously been his neighbour.
How did Vikram manage to seat everybody to the best
advantage on the
second and third evenings?

Ans:
Second evening:Vikram,Ankur,Abhishek,Amol,Vasu,Anurag and
Bhuwan.
Third
evening :Vikram,Anurag,Abhishek,Vasu,Bhuwan,Ankur,Amol.

8. Two trains start from stations A and B spaced 50 kms
apart at the same
time and speed.
As the trains start, a bird flies from one train towards
the other and
on reaching the second train, it flies back to the
first train.This is repeated till the trains collide.
If the speed of the trains is 25 km/h and that of the bird
is 100km/h.
How much did the bird travel till the collision.

Ans: 100 kms.

9. Four prisoners escape from a prison.
The prisoners, Mr East, Mr West, Mr South, Mr North head
towards
different directions after escaping.
The following information of their escape was supplied:

The escape routes were The North Road, South Road, East
Road and West
Road.
None of the prisoners took the road which was their
namesake.
Mr.East did not take the South Road
Mr.West did not the South Road.
The West Road was not taken by Mr.East

What road did each of the prisoners take to make their
escape?

Ans: Mr.East took the North Road
Mr.West took the East Road
Mr.North took the South Road
Mr.South took the West Road.

10. Complete the series:
5, 20, 24, 6, 2, 8, ?

Ans: 12 (as 5*4=20, 20+4=24, 24/4=6, 6-4=2, 2*4=8, 8+4=12).

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infosys Test #4

1. Replace each letter by a digit.
Each letter must be represented by the same digit and no
beginning
letter of a word can be 0.

O N E
O N E
O N E
O N E
-------
T E N

Ans: 0 =1, N = 8 ,E = 2, T = 7

2. Ann, Boobie, Cathy and Dave are at their monthly
business meeting.
Their occupations are author, biologist, chemist and
doctor, but not
necessarily in that order.
Dave just told the biologist that Cathy was on her way with
doughnuts.
Ann is sitting across from the doctor and next to the
chemist.
The doctor was thinking that Boobie was a goofy name for
parent's to
choose,but didn't say anything.
What is each person's occupation?

Ans: Since Dave spoke to the biologist and Ann sat next to
the chemist and
across the doctor, Cathy must be the author
and Ann the biologist.
The doctor didn't speak, but David did, so Bobbie is the
doctor and
Dave the chemist.

3. Sometime after 10:00 PM a murder took place.
A witness claimed that the clock must have stopped at the
time of the
shooting.
It was later found that the postion of both the hands were
the same but
their positions had interchanged.
Tell the time of the shooting (both actual and claimed).

Ans: Time of shooting = 11:54 PM
Claimed Time = 10:59 PM

4. Next number in the series is
1 , 2 , 4 , 13 , 31 , 112 , ?

Ans: 224.
No number has digits more than 4. All of them are 1 , 2, 4,
8 , 16 ,
32 , 64 converted to numbers in base 5

5. Shahrukh speaks truth only in the morning and lies in
the afternoon,
whereas Salman speaks truth only in the afternoon. A
says that B is Shahrukh. Is it morning or afternoon and who
is A - Shahrukh
or Salman.

Ans: Afternoon ; A is Salman.

6. Two trains starting at same time, one from Bangalore to
Mysore and other
in opposite direction arrive at their
destination 1 hr and 4 hours respectively after passing
each other. How
nuch faster is one train from other?

Ans: Twice

7. There are 6 volumes of books on a rack kept in order (
ie vol.1, vol. 2
and so on ).
Give the position after the following changes were noticed.

All books have been changed
Vol.5 was directly to the right of Vol.2
Vol.4 has Vol.6 to its left and both weren't at Vol.3's
place
Vol.1 has Vol.3 on right and Vol.5 on left
An even numbered volume is at Vol.5's place

Find the order in which the books are kept now.

Ans: 2 , 5 , 1 , 3 , 6 , 4

8. I bought a car with a peculiar 5 digit numbered licence
plate which on
reversing could still be read.
On reversing value is increased by 78633.Whats the original
number if
all digits were different?

Ans: Only 0 1 6 8 and 9 can be readupside down.So on
rearranging these
digits we get the answer as 10968

9. The shape in the sketch below is that of a square
attached to half of a
similar square.Divide it into four equal pieces

Ans: Hint : the figure can be divided into 12 equal
triangles

10. Supposing a clock takes 7 seconds to strike 7. How
mlong will it take to
strike 10?

Ans: 10 1/2 seconds.

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Infosys Test #5

1) 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.

Ans: 8+1=9

2) A soldier looses his way in a thick jungle. At random he
walks from his
camp but mathematically in an interesting fashion.
First he walks one mile East then half mile to North. Then
1/4 mile to West,
then 1/8 mile to South and so on making a loop.
Finally how far he is from his camp and in which direction.

Ans: Distance travelled in north and south directions
1/2 - 1/8 + 1/32 - 1/128 + 1/512 - and so on
= 1/2/((1-(-1/4))
Similarly in east and west directions
1- 1/4 + 1/16 - 1/64 + 1/256 - and so on
= 1/(( 1- ( - 1/4))
Add both the answers

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

Ans: 2 power 9 x 5 power 9

4) Conversation between two mathematcians:
First : I have three childern. The product of their ages is
36.
If you sum their ages, it is exactly same as my neighbour's
door
number on my left.
The second mathematician verfies the door number and says
that it is not
sufficient.
Then the first says " Ok one more clue is that my youngest
is really the
youngest". Immmediately the second mathematician
answers .
Can you answer the question asked by the first
mathematician?
What are the childeren ages?

Ans 1,6 and 6

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

Ans : 383 + 1 = 384

6) 500 men are arranged in an array of 10 rows and 50
columns according to
their heights.
Tallest among each row of all are asked to fall out.
And the shortest among them is A.
Similarly after resuming that to their original podsitions
that the
shortest among each column are asked to fall out.
And the tallest among them is B .
Now who is taller among A and B ?

Ans A

7) A person with some money spends1/3 for cloths, 1/5 of
the remaining for
food and 1/4 of the remaining for travel.
He is left with Rs 100/- .
How much did he have with him in the begining ?

Ans: Rs 250/-

8) There are six boxes 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

9) 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.

10) Grass in lawn grows equally thick and in a uniform rate.
It takes 24 days for 70 cows and 60 days for 30 cows to eat
the whole
of the grass.
How many cows are needed to eat the grass in 96 days.?

Ans : 20
g - grass at the beginning
r - rate at which grass grows, per day
y - rate at which one cow eats grass, per day
n - no of cows to eat the grass in 96 days
g + 24*r = 70 * 24 * y
g + 60*r = 30 * 60 * y
g + 96*r = n * 96 * y
Solving, n = 20.

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Infosys Test #6

1. From a vessel, 1/3rd of the liquid evaporates on the
first day.
On the second day 3/4th of the remaining liquid evaporates.
What fraction of the volume is present at the end of the
second day.

Ans: 50%

2. An orange glass has orange juice and white glass has
apple juice both of
equal volumes.
50ml of the orange juice is taken and poured into the apple
juice.
50ml from the white glass is poured into the orange glass.
Of the two quantities, the amount of apple juice in the
orange glass and
the amount of orange juice in the white glass,
which one is greater and by how much?

Ans: The two quantities are equal

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