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3. Given a standard deck of cards, in how many ways can you select.

a.Three cards?
b.Five face cards?
c.Four-of-a-kind?​


Sagot :

Answer:

To answer a), we note that there 52 ways to choose the first card, 51 ways to choose the second card, and 50 ways to choose the third card, for a total of 52*51*50=132,600 ways. More generally, there are n!/(n-k)!