Placement Papers - Infosys

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Infosys Paper Pattern Part 3

Posted By : Sharayu Rating : +22, -9

Infosys Paper Pattern


Part 1

1). A beggr collects cigarette stubs and makes one ful  cigarette with every 7 stubs.  Once he gets 49 stubs .  How many cigarettes can he smoke totally.
Ans. 8
2). A soldiar looses his way in a thick jungle  at  random  walks from his camp but  mathematically  in  an  interestingg  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 hoe far he is from his camp and in which direction.
Ans: 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). hoe 1000000000 can be written as a  product  of  two  factors  neither of them containing zeros
Ans   2 power 9 x 5 ppower 9  ( check the answer )

4). Conversation between two mathematcians:first : I have three childern. Thew pproduct of their ages is  36 .  If you sum their ages . it is exactly same as  my neighbour's  door number on my left. The  sacond  mathematiciaan  verfies  the  door number and says that the not sufficient  .  Then  the  first  says " o.k one more clue is that my youngest is the youngest" Immmediately the second mathematician answers . Can  you  aanswer  the questoion asked by the first mathematician? What are the childeren ages?
Ans  2 and 3 and 6

5). Light glows for every 13 seconds .  How  many  times  did  it 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 . ALL tallest among each row aare asked to   fall  out  .  And  the  shortest among THEM is A. Similarly after resuming that to  their  originaal podsitions that the shorteest  among  each  column  are  asked to fall out. And the longest among them is B . Now  who is  taller among A and B ?
Ans  A

7). A person spending out 1/3 for cloths , 1/5 of the  remsaining for food and 1/4 of the remaining for travelles  is left with Rs 100/- . How he had 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 conttaining 3 links each. It is taken to a backsmith to join into a single continuous one . How many links are to tobe  opened  to make it ?
Ans : 2.

10). Grass in lawn grows equally thickand in a uniform  rate.  It  takes 24 days for 70 cows and 60 for 30 cows . How many cows  can eat away the same in 96 days.?
Ans : 18 or 19

11). There is a certain four digit number whose fourth  digit  is twise the first digit. Third digit is three more than second digit. Sum of the first and fourth digits twise the third number. What was that  number ?
Ans : 2034 and 4368

Part 2

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

2. an orange galss has orange juice.  and white glass  has  apple juice.  Bothe equal volume 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?

3.  there is a 4 inch cube painted on all  sides.   this  is  cut  into no of 1 inch cubes.  what is the no of cubes which  have  no  pointed sides.

4. sam and mala have a conversation.  sam says i am vertainly 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 sattements by  the two are false.  How hold are they realy.

5.  ram singh goes to his office in the city, every day from  his  suburbun house.  his driver mangaram 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.   mangaram  also reaches at the same time.  one day  ramsingh  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 tow 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.   the  harbour line starts at 5.02a.m. a man goes to the  station  every  day to catch the first train.  what is  the  probability  of  man  catchinhg the first train

7.  some people went for vaction.  unfortunately it rained for 13  days when they  were  there.   but  whenever  it  rained  in  the  morning, they had clean afternood and vice versa.   In  all  they  enjoyed  11 morning and 12 afternoons.  how many  days  did  they  stay there totally

9. a survey was taken among 100 people to firn  their  preference  of watching t.v. programmes.  there are 3 channels.  given no  of   people who watch at least channel   1 "         "        2 "         "        3 no channels at all atleast channels  1and 3 "     "           1 and 2 "        "        2 and 3 find the no of people who watched all three.

10. albert and fernandes they have two leg swimming  race.   both  start from opposite and of the pool.  On the first leg, the  boys  pass each other at 18 mt from the deep end of the  pool.   during  the II leg they pass at 10 mt from the shallow end of  the  pool.  Both go at const speed.  but one of them  is  faster.   each  boy  rests for 4 sec to see at the end of the  i  leg.   what  is  the  length of the pool.

11. T  H  I  S                Each  alphabet  stands  for  one  I S                   digit, what is the maximum value T  --------------                can take
    X F X X
  X X U X
--------------
  X X N X X
--------------


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.

2. evvery day a cyclist meets a train at a  particular  crossing.  the road is straignt before the crossing and both are  travelling  in the same direction.  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 seppd of the train.

3. five persons muckerjee, misra, iyer,  patil  and  sharma,  all take then first or middle names in the full names.  There  are  4  persons having I or middle name of kumar, 3 persons with mohan, 2  persons withdev and 1 anil. --Either mukherjee and patil have a I or middle name  of  dev  or  misra and iyer have their  I or middle name of dev --of mukherkjee and misre, either both of them have  a  first  or  middle name of mohan or neither have a first or  middle  name  of  mohan --either iyer of sharma has a I or middle name of kumar  hut  not  both. who has the I or middle name of anil

5. a bird keeper has got Ppigeon, M mynas and  S  sparrows.   the  keeper goes for lunch leaving his assistant to watch the birds.
a. 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.
b. when the bird keeper come back, the assistand told him that  x birds have escaped.  the keeper realised that atleast2 sparrows  have escaped.  what is minimum no of birds that can escape.

6.  select from the five alternatives A,B,C,D,E AT THE end of each question ,two  conditions  will  be  given. the choices are to filled at follows.
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

7.  there are N coins on a table.  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 --1. 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

8. Two turns have vertain pecular charcteristics.   One  of  them always lies on Monday, Wednesday, Friday.   he other always lies  on Tuesdays, thursdays and saturdays.  On the other days they tel  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

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