How many different ways can a band teacher select the lead and co lead trumpet player from a group of 12 trumpet players

Question

Kelvin Liu

Mathematics

17 February, 10:12

How many different ways can a band teacher select the lead and co lead trumpet player from a group of 12 trumpet players

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Answers (1)

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Bronson Glenn · Answer 1

So if there are 12 trumpet players, then teacher may take the leader, then, after he's taken, there are 11 ways of picking co-leader.

Multiply both numbers of possibilities - > 12*11=132

There are 132 ways of selecting them.