document.write( "Question 41640: During a sale, 1/6 of the CD prices are reduced. Find the probability that 2 of 4 randomly-selected CDs have reduced prices?\r
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Algebra.Com's Answer #26908 by Nate(3500) $\"\"$ $\"About$

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(r + n)^4 = $\"1r%5E4n%5E0+%2B+4r%5E3n%5E1+%2B+6r%5E2n%5E2+%2B+4r%5E1n%5E3+%2B+1r%5E0n%5E4\"$ where $\"r\"$ is reduced prices and $\"n\"$ is not reduced prices
\n" ); document.write( " $\"6r%5E2n%5E2\"$
\n" ); document.write( " $\"6%281%2F6%29%5E2%285%2F6%29%5E2\"$
\n" ); document.write( " $\"6%281%2F36%29%2825%2F36%29\"$
\n" ); document.write( " $\"25%2F216\"$ or 11.57% \n" ); document.write( "

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