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Infosys Placement Paper 5 |
1. A person needs 6 steps to cover a distance of one
slab. If he increases his foot length (step length) by 3
inches he needs only 5 steps to cover the slabs length.
What is the length of the each slab.
Ans: 31 inches.
2. There are 19 red balls and one black ball. Ten balls
are put in one jar and the remaining 10 are put in
another jar. What is the possibility that the black is
in the right jar.
Ans: 1/2.
3. There is one lily in the pond on 1st june. There are
two in the pond on 2nd june . There are four on 3rd june
and so on. The pond is full with lilies by the end of
the june.
(i) On which date the pond is half full?
Ans: 29th. --the june has 30 days).
(ii) If we start with 2 lilies on 1st june when will be
the pond be full with lilies.
Ans: 29th June.
4. A lorry starts from Banglore to Mysore at 6.00 A.M,
7.00 A.M, 8.00 am.....10 pm. Similarly one another
starts from Mysore to Banglore at 6.00 am,7.00 am, 8.00
am.....10.00pm. A lorry takes 9 hours to travel from
Banglore to Mysore and vice versa.
(i) A lorry which has started at 6.00 am will cross how
many lorries.
Ans: 10.
(ii) A lorry which had started at 6.00pm will cross how
many lorries.
Ans: 14.
5. A person meets a train at a railway station coming
daily at a particular time . One day he is late by 25
minutes, and he meets the train 5 k.m. before the
station. If his speed is 12 kmph, what is the speed of
the train.
Ans: 60 kmph. Refer--Shakuntala Devi Book.
7. A theif steals half the total no of loaves of bread
plus 1/2 loaf from a backery. A second theif steals half
the remaing no of loaves plus 1/2 loaf and so on. After
the 5th theif has stolen there are no more loaves left
in the backery. What was the total no of loaves did the
backery have at the biggining.
Ans: 31.
8. A gardener plants 100 meters towards east, next 100
meters towards north,next 100 meters towards west. 98
meters towards east, 96 meters towards north and 96
meters towards west, 94 meters towards south. and 94
meters towards east and so on. If a person walks between
the trees what is the total distance travelled by him
before he reaches the center.
Ans: |---------------| | | | | | | | --------|- |
---------------------| -.
9. Long division: example: 1089709/12 ?
ANALYTICAL 4 question---40 marks; 40 minutes;
1. There are four women and 3 men. They play bridge one
night. Find widow among them. Rules:
(i) wife and husband are never partners.
(ii) Wife and husand never play more than one game. One
night they played four games as follows:-
1. ------ + ------ vs ------- + ---------
2. ------ + ------ vs ------- + ---------
3. ------ + --*--- vs ------- + ---------
4. ---*-- + ------ vs ------- + ---------
the woman are marked * above.
Ans: Refer Problem 21. Mind Teasers by Summers.
2. There are 5 peoples; few of them speak true, few of
them false. Identify them.
3. & 4.th problems on Venn diagram
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