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Infosys Puzzles written test PDF Print E-mail

1) There are some houses in a street back to back .And they that house behind 10 was 23. How many houses in the street?
Ans.) 32

2) There are 1997 doors in a auditorium and as many as people as the no of doors open enter the auditorium .A door was closed and as many as people as no of doors open leave the auditorium. The process was repeated till the no of doors is equal to1.find the total no of peoples enter the auditorium?

3) A batsman average was 15.at last innings he took 23 runs then his average became 16.how much run he should take to make his average 18?

4) Find the number WXYZ divisible by 36?
i) let the digits be 5, 4, 3, 6 –not in that order
ii) sum of last two digits is 9
iii) sum of middle two digits is 7
->if one is sufficient then ans as A || if two is sufficient then ans as B||if all are necessary then ans as C|| if nothing is needed then ans as D

5) X and Y live in a North-South parallel street. X travels 10 km towards North to reach the east-West Street. Y travels 6 km towards south to reach the east – West Street. X travels now 4km towards east and y travels 8km towards west and they met each other. What is the distance between x and y?

6) The houses are numbered 1, 2, 3,… and reach the end of the street and backtracks toward s the starting point. The house numbered 10 is opposite to 23. There are even no of houses. Find the total no of houses.

7) A seller has a set of apples out of which he sells one half of it and half an apple to his first customer. Then he sells half of the remaining apples and a half apple to his second customer. Then he sells half of the remaining apple and ½ apple to his third customer and so on. This repeats up to 7th customer and no more apples are remaining. Find the total no of apples he had.

8) A hollow cube of size 5cm is taken, with the thickness of 1cm. It is made of smaller cubes of size 1cm. If the outer surface of the cube is painted how many faces of the smaller cubes remain unpainted?

9) If a 36 cm thread is used to wrap a book, lengthwise twice and breadth wise once, what is the size of the book?

10) If 4 circles of equal radius are drawn with vertices of a SQUARE as the centre , the side of the square being 7 cm, find the area of the circles outside the square?

11) A bus has 40 seats and the passengers agree to share the total bus fare among them equally. If the total fair is 80.67, find the total no of the seats unoccupied.

12) A 4 digit no may consist of the digits 6,2,7,5 where none of the nos are repeated. Find the possible no of combinations divisible by 36?

13) If u r traveling from Mumbai to Bangalore and return back .To find the speed of the car which of the following r needed.
a) The distance between them.
b) Time taken
c) avg speed towards Mumbai and the avg speed towards Bangalore
Choices:
1)a only.       2) a and b       3) a, b ,c     4) b only      5) c only

14) A secret can be told only 2 persons in 5 minutes .the same person tells to 2 more persons and so on. How long will take to tell it to 768 persons?
a)47.5 min b)50 min c) 500 min d)…. Ans: 47.5 min

15) Three birds cross a point in a same st. line and of that 2 fly in opposite directions. If a triangle is formed with the position of the birds what kind of the triangle will be formed?
a)isosceles b)right angle c)equilateral d)right angle and isosceles.

 
 
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