Reasoning Quiz No.40 Choose the word which is different from the rest.

Question: Between two book-ends in your study are displayed your five favourite puzzle books. If you decide to arrange the five books in every possible combination and moved just one book every minute, how long would it take you ?
[A].

1 hour

[B].

2 hours

[C].

3 hours

[D].

4 hours

Answer: Option B

Explanation:

Clearly, number of ways of arranging 5 books = 5 ! = 5 x 4 x 3 x 2 x 1 = 120.

So, total time taken = 120 minutes = 2 hours.

Question: A bus starts from city X. The number of women in the bus is half of the number of men. In city Y, 10 men leave the bus and five women enter. Now, number of men and women is equal. In the beginning, how many passengers entered the bus ?
[A].

15

[B].

30

[C].

36

[D].

45

Answer: Option D

Explanation:

Originally, let number of women = x. Then, number of men = 2x.

So, in city Y, we have : (2x – 10) = (x + 5) or x – 15.

Therefore Total number of passengers in the beginning = (x + 2x) = 3x = 45.