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Algebra.Com's Answer #345665 by Edwin McCravy(20060) $\"\"$ $\"About$

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a reduced deck of 4 Jacks and 4 Queens is shuffled. if two cards are picked at random, what is the probability that the second is a queen, given that the first is a jack?
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document.write( "Since we know that the first card is a jack, then we know that the second card\r\n" );
document.write( "was from a deck that did not contain it. It was from a 7-card deck that\r\n" );
document.write( "contained only 3 jacks and 4 queens, so the probability that it is a queen is 4\r\n" );
document.write( "out of 7 or 4/7.\r\n" );
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document.write( "Edwin

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