A club with 20 members must choose a three-person executive

A club with 20 members must choose a three-person executive committee and a five-person social committee.

a) How many ways can the two committees be chosen if the committees can overlap (that is, if someone can be a member of both committees?)

b) How many ways can the two committees be chosen if the committees cannot overlap?

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A club with 20 members must choose a three-person executive : a club with 20 members must choose a three-person executive committee and a five-person social committee.a how many

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