document.write( "Question 306608: Suppose there are 10 balls in an urn, 4 blue,4 red , 2 green. The balls are also numbered 1 to 10. How many ways are there to select an ordered sample of 4 balls without replacement such that there are 2 blue balls and 2 red balls in the sample? \n" ); document.write( "
Algebra.Com's Answer #219393 by stanbon(75887)\"\" \"About 
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Suppose there are 10 balls in an urn, 4 blue,4 red , 2 green. The balls are also numbered 1 to 10. How many ways are there to select an ordered sample of 4 balls without replacement such that there are 2 blue balls and 2 red balls in the sample?
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\n" ); document.write( "# of ways to select 2 blue balls: 4C2 = 6
\n" ); document.write( "# of ways to select 2 red balls:: 4C2 = 6
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\n" ); document.write( "# of ways to select 4 random balls from 10 : 10C4 = 210
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\n" ); document.write( "P(2 blue and 2 red) = (6*6)/210 = 36/210 = 0.17
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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