i have one more question. will medal and fan if answers
how many different ways can a band teacher select the lead and co-lead trumpet player from a group of 12 trumpet players?
A.)132
B.)264
C.)312
D.)448

Question

i have one more question. will medal and fan if answers
how many different ways can a band teacher select the lead and co-lead trumpet player from a group of 12 trumpet players?
A.)132
B.)264
C.)312
D.)448

anonymous · Answer

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kropot72 · Answer

The order of selection matters, therefore we need to find the number of permutations of 12 players taken 2 at a time:
$$12P2=\frac{12!}{(12-2)!}=12\times11$$