If there are12 books on a rack,a person has to choose 5books. In how many ways can he choose if one particular book is always selected?

asked Jul 1, 2022 138k views

2 votes

If there are12 books on a rack,a person has to choose 5books.

In how many ways can he choose if one particular book is always selected?

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3 votes

Answer:

330

11 choose 4

$=(11!)/(4!\left(11-4\right)!)\\= 330$

Explanation:

Chammp answered Jul 7, 2022