Question 115966
Bob is moving and all of his CDs are mixed up in a box. 
Twelve CDs are rock, 
eight are jazz, and 
five are classical. 
If he reaches in the box and selects them at random, find each possibility.
What is the possibility of  two classical cds and one rock cd?
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P(2c and 1r) = P(2c)*P(1r|2c)
= [5C2/25C2]*[12/23]
= 0.0333*0.5217
= 0.0174
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Cheers,
Stan H.