A club has 50 members of which 20 are freshmen, 15 are sophomores, 10 are juniors...

A club has 50 members of which 20 are freshmen, 15 are sophomores, 10 are juniors and 5 are seniors.

a) How many ways are there to select a president, a senior vice president, and a vice president if they can not be from the same class?

b) How many ways are there to select one president, and two vice presidents if they can not be from the same class?

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orchestra answered 1 year ago

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