document.write( "Question 354181: A jar contains 9 blue marbles and 13 green marbles. Two marbles are picked in sequence from the jar. Find the probibility that the second marble is green given that the first marble is blue(assume that the first marble is not replaced).\r
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Algebra.Com's Answer #253146 by Edwin McCravy(20063) $\"\"$ $\"About$

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A jar contains 9 blue marbles and 13 green marbles. Two marbles are picked in
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document.write( "There are 9+13 or 22 marbles.  So 9 twenty-seconds, (nds) of the time\r\n" );
document.write( "we will select a blue marble first.\r\n" );
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document.write( "If we then don't replace it, then after picking that blue marble, there will\r\n" );
document.write( "remain only 8 blue marbles and 13 green marbles, or 8+13 or 20 marbles.  \r\n" );
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document.write( "Then 13 twenty-firsts (sts) of those times when we pick a blue\r\n" );
document.write( "marble first, we will pick a green marble second.\r\n" );
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document.write( "So the answer is gotten by taking sts of those nds of the\r\n" );
document.write( "times when we pick a blue marble first.  So the answer is\r\n" );
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document.write( "Edwin

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