Question 305400: Two cards are drawn from a standard deck of cards. Find P(both black or both 9's, but not a black 9) Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! nCr=combination of n things taken r at a time.
26C2 two black cards = 325
2C2 two red nines = 1
2C52 any 2 cards = 1326
P=(325+1)/1326 = .2459...
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Ed