document.write( "Question 906395: if a box contains 12 transistors, 3 of which are defective. If 3 are selected at random what is the probability that all are defective
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Algebra.Com's Answer #549788 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! if a box contains 12 transistors, 3 of which are defective. If 3 are selected at random what is the probability that all are defective \n" ); document.write( "----- \n" ); document.write( "# of ways to select 3 defective:: 3C3 = 1 \n" ); document.write( "---- \n" ); document.write( "# of random sets of 3:: 12C3 = (12*11*10)/(1*2*3) = 220 \n" ); document.write( "---- \n" ); document.write( "P(3 defective) = 1/220 \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |