Question

In how many ways can Susan arrange 7 books into 5 slots on her bookshelf?

Answer 1

Answer:

• 2520

Step-by-step explanation:

This is permutation question

The formula for it:

• N = b!/(b-s)!, where N- number of ways, b- number of books, s- number of slots

Finding the answer:

• N = 7!/(7-5)! = 7!/2! = 7*6*5*4*3 = 2520