<PRE><B>Question 656576</B>
a box contains 3 red, 3 white, and 3 green balls. Two balls are drawn out of the box in succession withour replacement. What is the probability that the two balls are the same color?
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# of ways to succeed: 3C2 + 3C2 + 3C2 = 3 + 3 + 3 = 9
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# of random results: 9C2 = (9*8)/(1*2) = 36
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P(2 the same color) = 9/36 = 1/4
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Cheers,
Stan H.
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