<PRE><B>Question 538363</B>
A bag contains 30 marbles with 18 blue ones and 12 red ones. If you reach into the bag and draw out marbles one at a time until you have three in your hand, what is the probability that they are all blue?
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# of ways to succeed: 18C3
# of random results: 30C3
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P(3 blue) = 18C3/30C3 = 204/1015
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Cheers,
Stan H.
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A. 68/375
B. 11/203
C. 204/1015
D. 27/125
</PRE>