Question

how many different ways could i choose three shirts to pack for a weekend trip, if i have 12 shirts to choose from? assume the shirts are selected without replacement.a. 12! / 3!b. 12! / 9!c. 12! / 8! 4!d. 12! / 9! 3!

Answer 1

A

Explanation:

According to the given question.

Total number of shirts, n = 12

Number of shirts to be selected, r = 3

As we know, the total number of ways of selection of r objects from n objects at a time without replacement is given by

C(n, r) = n!/r!(n - r)!