document.write( "Question 168920: Find P(7,2) \n" ); document.write( "
Algebra.Com's Answer #124570 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
I believe you are referring to a \"permutation\".
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\n" ); document.write( "P(n,r) = n!/(n-r)!
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\n" ); document.write( "So, if you have
\n" ); document.write( "P(7,2) = 7!/(7-2)!
\n" ); document.write( "P(7,2) = 7!/5!
\n" ); document.write( "P(7,2) = (1*2*3*4*5*6*7)/(1*2*3*4*5)
\n" ); document.write( "P(7,2) = (6*7)
\n" ); document.write( "P(7,2) = 42\r
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