INFOSYS Placement Papers
INFOSYS Placement Paper
This is 2005 - Chennai PaperTotally
10 questions to be answered in 1 hour.
1. four family names are given clark ,flure,miller ,jac… and their
members name are given Stacy ,robin,Erica,mandy . but not in order.( u
hav to find which frend belongs to which family) Each friend prepares
salad using 3 different fruits . they are given apple, cherry, grape,
banana., no two friends uses the same combination.
Various conditions are given and 4 ques asked.
1. Robin is not belonging to miller family he used apples.
2. Erica is not a miller not a Clark.
3. Clark family used cherries and grapes but flure used one of these not
both.
4. Mandy and miller used apples and cherries
1. Which fruit did Mandy didn't used?
2. What are the fruits used in miller salad?
3. Robin belongs to which family?
4. What r the Common fruits used in robin and Erica salads?
2. there r some bees in a garden..1/5th of them went to a particular
flower,1/3rd went to another flower,3 times the difference of the above
two went to third flower..n one was remaining n it was roaming
around..how many bees were there? (3 marks)
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.
4. In a dark room, there is a box containing 5 white balls, 5 black
balls, 5 yellow balls, 5 blue balls, and 5 red balls. What is the least
number of balls to be chosen so as to ensure a pair of socks has been
drawn ?
5. out of 100 people , 85 had cars, 70 had mobiles, 80 had own house,75
people had bikes. How many people had all of these… ?
6. 6. A and B together had set their watch at showing same time.
Unknowing to both of them, A’s watch is fast by 1 minute and B’s watch
is slow by 2 minutes. After the couple of hours, when they looked at
their watch ,, it was found that A’s watch was 1 hour ahead of B’s
watch.. Can you say how long it is before their difference in time is 1
hour..but after setting their watch at same time..
7. Ajit was driving down the country side when he saw a farmer tending
his pigs and ducks in his yard. Ajit asked the farmer how many of each
he had.
The farmer replied that there were 60 eyes and 86 feet between them.
How many ducks and how many pigs were there ?
8. This question about footprint in kitchen.. three brothers annie,
danny, fanny. Their mother asks them about something stolen from the
kitchen.. From these children, one tells truth, and other two tell lies
.Annie says “I didn’t do it “, Fanny says “ Danny did it”, and Danny
says “ fanny says lie “.. the question is to find whose footprint in the
kitchen…
9. This question is about to find the ages of three persons.. Three
statements from each person will be given. And from the 3 statements
from each person, one statement will be false and the other two will be
truth. So totally 9 statements there. With the help of these information
, we have to find the ages of these 3 persons.
10. In a box, there will be a certain number of papers in some order,
each containing person name. A manager was asked to choose the people
from the box randomly, say 5%.(ie., 5% of people should have to be
taken). The manager picks first one and left the next, picks third one
and left next 2 , and picks sixth one and left next 3. and goes on.
When he picks the last one, it is actually the final one in the box.!!..
so he got 5% people from the box.. what was the total no of papers in
the box ?
--------------------------------------------------------------------------------
Infosys Placement Paper and Sample Paper Exam 15th May 2005
10 puzzles
==========
1>( 3 marks)
Sandy's uncle died leaving 1000 rs behind to be distributed among his
five nephews.
The money is to be divided among the nephews according to their ages. A
person gets
Rs 20 more than his immediate younger brother.Sandy being the youngest
what was his share?
Ans. Rs 160.0
It was quite an easy one.
let sandy's share be x
x+x+20+x+40+x+60+x+80=1000
5x+200=1000
x=800/5
x=160
2> ( 4 marks)
Rohit was descending from the elavator which was not working. When he
had stepped down
7 steps his sir started from the bottom of the elevator and they passed
each other and when Rohit had still 4 steps to go down, his sir reached
at the top. Taking into consideration that sir’s 2 steps took same time
as Rohit’s one what were the total no of steps?
Ans
22 steps
let no of steps be x
speed=distance/time
Distance covered by Rohit = x-7-4 (7 steps already covered and 4 were
still to go)
Distance covered by sir = x
Speed of Rohit =s
Speed of sir = 2s
Time taken is equal in both the cases so
Time(rohit)=time(sir)
(x-7-4) / s = x / 2s
2x – 22 = x
x=22
3> ( 3 marks)
A vendor who is an ex-mathematician has a number of apples and when he
arranges them in rows of 3 he is left with one more, when he arranges
them in rows of 5 again he is left with 1 more, Same happens with when
he tries to arrange them in rows of 7 and 9 that is 1 apple is left
extra.
But when he arranges them in a row of 11 he is left with none. Can u
tell me how many apples were there?
Ans
946
the no is a multiple of 3,5,7,9 + a remainder of 1. So
3* 5* 7* 9= 945 + 1 =946
946 /11= 86
so it is divisible by 11 also.
4> ( 4 marks)
A theft was reported in a p[olice station and police detained 3 persons
– Tommy, Lee and Andy on the basis of doubt. However everyone said that
he did not steal and one among the other two is the thief. Later on
police came to know that Tommy was lying. Who was the real thief?
Ans
Tommy
He gave 2 false statements:
1: he didn’t steal though he was the thief.
2: one among the other two did it. If he is the thief how can other 2 do
it.
It was very easy and infact that created a doubt n everyone cross
checked it again n again to be sure as nobody was expecting such a
simple puzzle.
5> (6 marks)
The temperature is noted for 5 consecutive days and it is noted that no
two days have the same temperature. Moreover the product of all the 5
readings is 12. The difference is noted to the nearest degrees. What
were the readings of the temperature?
Ans: -2, -1, 1, 2, 3
Factors of 12: 4*3,6*2
2*2*3 bt 2 cant b repeated so –2 and to nullify -ve sign –1 is there
so –2 *-1 * 1 * 2 *3 = 12
6> ( 8 marks)
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 and the rest
have it in 12:30 –1:30
Mrs Allen and Mrs Benett are sisters.
Cashier and clerk share their lunch among themselves.
Two Bachelors share their rooms.
Davis and Ewinger doesn’t face each other from the day Davis reported
Ewinger to the Manager when he returned from lunch and found out that
Ewinger has already left for lunch before time.
Ans:
I m not sure about the answers bt question was like this
Davis:Buyer
Clark:Cashier
Allen: Manager
Benett:Clerk
Ewinger:Footwalker
Lunch 11:30 – 12:30
Two
Davis ( from the 5th point he takes lunch in the earlier session)
Davis cant be manager
lunch 12:30 – 1:30
three
Ewinger( form the 5th point he takes
lunch in 2nd session
Ewinger cant be manager
7> (4marks)
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.
8> (4 marks)
A boy’s age is 5 times as old as his sister. His father’s age is twice
to that of his mother who is five times as old as the boy. The sum of
all of them equals to that of his grandmother who is celeberating his
81st birthday. How old is the boy?
Ans:
5 years old
let boys age b x
sister’s = x/5
mother’s=5x
fatther’s=2(5x)
grandmother’s=81
81=x/5+x+5x+10x
81*5 = x+5x+ 25x +50x
405 = 81x
x= 405/81
x=5
so boys age is 5 years
9> (6 marks)
It was something like 4persons take part in a race and got different
ranks.what weretheir ranks: John, black, Wee, Anthony
Conditions were given like
If John stood first then wee cant be on 4th position and Anthony at 2nd
postion.
Similarly 4 5 conditions were given
10> (8 marks)
An easy question with 4 subparts
A painter has 7 paintings and he follow certain rules while exhibiting
the paintings:
Never places x and y in the same exhibit
If y is there z is also there
U is there if and if only w is there
Following these constraints 4 questions were asked based on the possible
combinations in the exhibit
--------------------------------------------------------------------------------
After the puzzle round half an hours general english test was there . It
was very easy having 45 questions
Result was anounced the same day
Next day in the morning I had my intrview . It was very general hr round
.Two persons were there asking general qua\estions.
Questions of intrvw:
what is the difference u faced while working in a team during ur
training? Don’t u think more options and suggestions mean confusion.
What if a person in ur team is always talking against u in all matters
without listening to ur part?(leave it to team leader)
Why 5th gear is provided in new cars?(for speed)
My dad was frm army.So they asked wat u like abt army.(uniform, respect,
discipline)
What all places have u been during the transfers and how did that affect
u in ur life and y did u think so.( adjustable and adaptable)
They gave me one sequence of numbers and without giving much time asked
me the approach I was following to solve that. I was nt able to solve it
bt I explained d approach to them.
Asked my hobbies .My toughest time in whole life an happiest moment.
Questions u want to ask from us.
--------------------------------------------------------------------------------
Infosys Placement Paper and Sample Paper Exam on 6 th Feb 2005
Ref. Books
· QUANTITATIVE APTITUDE - RS AGGARWAL(For basic knowledge in all
concepts-Atleast just see the formulae and examples)
· Puzzles Insight -Y.R.K.Mahesh (This is a very good book)
50/- A Bookstal atl Avenue road,Bangalore
· Puzzles to Puzzle You-Shakuntala Devi
· Puzzles and Teasers -George J Summers
Questions were marked as 3,3,3,4,4,6,6,5,8,8
If u find any wrong answer please send me at sapgaurav@yahoo.com.
1). A frog falls down in a well 30 ft deep. Every day it jumps 3 ft up
and
every night it falls down by 2ft. How many days it takes to come out
of the well.
Ans 28 days.
2). There is a 1 km long wire placed on some no. of poles which r in
equal distance. If the no of poles
is reduced by 1 then the distance of wire between each poles
increases 1 2/3.how many poles are there initially.
Ans: Let there r N poles before.
Then the distance betn two adjacent poles is =1000/(N-1)
After removing one pole distance betn two adjacent poles is= 1000/(N-2)
Now 1000/(N-1) + (5/3) = 1000/(N-2)
(N-1) * (N-2) =600
Solve it ans is 26
3). B is younger than C and older than A
F is younger than A and older than E
G is younger than H and older than F
Like this few more stmts were there .It was so easy..... (3 m)
Ans Edward
4). For every one hour two trains will start at the same time ,one from
Bangalore to Madras another
from Madras to Bangalore On parallel tracks. All trains travel with same
speed and each train will
take 5 hours to reach the other station.How many trains, one train will
meet during the journey?
Ans l—------l—------l—------l—------l—------l
1 2.5 hrs
2 3.0 hrs
3 3.5 hrs
4 4.0 hrs
5 5.0 hrs
5). A jeweller is having a left and right window display cases and some
gems like amethyst A, diamond D,E,S,R,G,O
In each window he should display 3 ornaments.
1. A should be only on left side window in inclined position
2. D should be only on right side window in inclined position
3. S,E should be placed together only
4. R cannot be placed on the side of D or G.
4 questions were there like
1.What is the possible case on the left window , from the following
ans A,R,O
2.What is the possible case on the right side window
3.I f X,Y pair occurs on left side window, what r the possibilities for
right hand window
4.I f P,Q pair occurs on right side window, what r the possibilities for
left hand window
This was the pattern ,They were so easy (8 marks)
6). A and B write a test
A says " i got a third of the ques. wrong"
b says " i got 5 wrong"
together they got three quarters of the questions correct.
how many did A get correct. (5 m)
Ans suppose there r total x Qs then
( x * 2/3 ) + ( x –5 ) = ( 2x * ¾ ) => x= 30
7). clark ,jones,mason, smith are 4 ppl. there are 4 professions
druggists,grocer,butcher,policeman.find out who is who (8 m)
1)clark and jones are neighbours and they drive each other to work.
2)jones earns more than mason
3) the butcher walks to work
4) clark always beats smith while bowling ,
5) the police man earns more than the druggists and the grocer.
6) the policeman never met druggist.
7) policeman met the grocer only once when he caught by the policeman
for speeding.
(Means he was caught driving his vehicle crossing the speed limit )
i hope i did not miss any conditon
I don’t know the answer,If someone knows please tell me.
8). Natives of one town always Lie.Visitors always tell truth.One day I
went to the town,and I met one Sales Person and soon he became my
friend.We went to one hotel to have lunch. I wanted to know whether the
sales person is a visitor or native to that town without asking
directly.I told him to go and ask a woman in the hotel as”ARE YOU A
VISITOR?”.He went to her and asked her,and he came back and said”She
Said YES”.Now can u tell me whether the salesperson is visitor or
Native?
Ans : Suppose take the below cases
N-NATIVE ,V-VISITOR
SalesPerson Woman
N N No
N V No
V N YES
V V YES
9) 3 people M,H,G gave 3 statement each, of which 2 are true and 1 is
false.
what are M,H,G 's ages.
M: 1. m=22
2. h=m+2
3. g=m-1
H: 1. H is not youngest
2. H,G difference is 3
3. H=g+1
M: 1.
2. m=23
3.
ans: m=23,g=22,h=25
10). In how many ways you can arrange the numbers on the die .There is
only condition that
1,6 and 2,5 and 3,4 will always be on the opposite sides.
Ans (6C3) *3! = 120 (3 marks)
|
123
Eng