Question

In how many different ways can 5 books be arranged on a shelf?

5
25
120

Answer 1

5 ways can 5 books be arranged on a shelf

answer is 120 (third choice)

Answer 2

120 ways

Explanation:

We have total 5 books which needs to arranged in the shelf.

We know that "n different things can be arranged in n! ways".

Since, here number of books is 5. Hence, n = 5

Thus, we can conclude that 5 diffident books can be arranged in 5! ways.

Let us find the value of 5!.

5!

= 5 ×4 ×3 ×2 ×1

= 120

Thus, 5 different books can be arranged in a shelf in 120 ways.