document.write( "Question 1184397: A box contains 13 balls out of which 8 are white balls and 5 are black balls. Three balls are drawn at random? What is the probability that balls of the both colors are drawn? \n" ); document.write( "
Algebra.Com's Answer #814960 by Boreal(15235)\"\" \"About 
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13C3 are the number of choices or 286.
\n" ); document.write( "8C2*5C1 is one way and that equals 140.
\n" ); document.write( "8C1*5C2 is the other way and that equals 80.
\n" ); document.write( "There are 66 other ways which are 8C3 or 56, and 5C3, or 10
\n" ); document.write( "the answer is 220/286 or 0.769.
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