document.write( "Question 565378: A box contains 3 red balls and 4 green balls. If two balls are randomly selected in sequence, what is the possibility that a red ball and a green ball are picked out of the box. State the rule for P(A&B) and then substitute the values and compute the answer. \r
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Algebra.Com's Answer #365784 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A box contains 3 red balls and 4 green balls. If two balls are randomly selected in sequence, what is the possibility that a red ball and a green ball are picked out of the box. \n" ); document.write( "---- \n" ); document.write( "# of red/green pairs: 3*4 = 12 \n" ); document.write( "# of random pairs: 7C2 = (7*6)/(1*2) = 21 \n" ); document.write( "--- \n" ); document.write( "P(red/greed pair) = 12/21 = 4/7 \n" ); document.write( "==================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |