document.write( "Question 1202292: A box contains 5 red, 4 blue, and 3 white balls. In how many ways can we select 4 balls such that exactly 2 are blue? \n" ); document.write( "

Algebra.Com's Answer #837002 by ikleyn(52786) $\"\"$ $\"About$

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\n" ); document.write( "A box contains 5 red, 4 blue, and 3 white balls.
\n" ); document.write( "In how many ways can we select 4 balls such that exactly 2 are blue?
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document.write( "So, there are 4 blue balls and 5+3 = 8 not-blue balls in the box.\r\n" );
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document.write( "We can select 2 blue balls from 4 blue balls in   =  = 6 different ways.\r\n" );
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document.write( "We can select 2 not-blue balls from 8 not-blue balls in   =  = 28 different ways.\r\n" );
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document.write( "Thus we can comprise a quadruple consisting of 2 blue and 2 not-blue balls in\r\n" );
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document.write( "     = 6*28 = 168  different ways.    ANSWER\r\n" );
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