document.write( "Question 534136: A carpenter has a box of 70 nails..30 are black,25 red and 15 are blue..suppose 3 nails are drawn..find probability that the drawn nails are not black.. \n" ); document.write( "
Algebra.Com's Answer #351359 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A carpenter has a box of 70 nails..30 are black,25 red and 15 are blue..suppose 3 nails are drawn..find probability that the drawn nails are not black.. \n" ); document.write( "----- \n" ); document.write( "# of ways to get 3 not-black: 40C3 \n" ); document.write( "# of random sets of 3 nails: 70C3 \n" ); document.write( "--- \n" ); document.write( "P(3 not-black) = 40C3/70C3 = 0.1805 \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=========== \n" ); document.write( " |