Homework Help: math

Posted by mary jackson on Thursday, February 21, 2013 at 9:52pm.

A jar had 16 marbles 4 are red . One marble is drawn and not replaced. Then s second marble is drawn . What is the probability of selecting a red marble and then another red marble?

math - Reiny, Thursday, February 21, 2013 at 10:25pm
prob (red, red) = (4/16)(3/15) = 1/20

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