document.write( "Question 447034: CD Purchase Neo Anderson wants to purchase six different CDs but only has enough money to purchase four. In how many ways can he select four of six CDs for purchase?\r
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Algebra.Com's Answer #307837 by jorel1380(3719) $\"\"$ $\"About$

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6 cd's selected 4 at a time equals 6C4, which equals:
\n" ); document.write( "6!/4!2!=6x5x4!/2!x4!=30/2=15 different ways to buy 4 cd's.. \n" ); document.write( "

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