document.write( "Question 1105352: Box M contains nine balls numbered 1 through 9 and box N contains five balls numbered 1 through 5 . A box is chosen at random and a ball drawn; if the ball shows even number , what is the probability that it come from box M? \n" ); document.write( "
Algebra.Com's Answer #720183 by Edwin McCravy(20060)\"\" \"About 
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document.write( "We want the probability that the ball came from box M, \r\n" );
document.write( "given that it is even:\r\n" );
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document.write( "The probability of choosing box M is 1/2.\r\n" );
document.write( "The probability of then getting an even ball (from box M) is 4/9,\r\n" );
document.write( "So \r\n" );
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document.write( "The probability of choosing box N is 1/2.\r\n" );
document.write( "The probability of then getting an even ball (from box N) is 2/5,\r\n" );
document.write( "Therefore,\r\n" );
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document.write( "Therefore,\r\n" );
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document.write( "Therefore,\r\n" );
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document.write( "Edwin
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