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)![]() ![]() You can put this solution on YOUR website! 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. \n" ); document.write( " \n" ); document.write( " |