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?

Ruslan Valeev asked Aug 14, 2022

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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?

Ruslan Valeev asked Aug 14, 2022

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24 votes

Answer:

330

11 choose 4

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

Explanation:

FrancescoDS answered Aug 18, 2022

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