Author: benjiboo Posted: Tue Dec 08, 2009 1:47 pm (GMT -8) logitech wrote: 1 2 3 4 5 6 1 2 3 4 5 6 So we can choose 12×10x8×6 ways but we need to divide it by 4! = 240 ways ( NO PAIR ) C(12:4) =495 So : (495-240)/495 I like this method, however I am unsure of the 4! part. Why divide by 4!

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Problem Solving :: RE: deck of cards