document.write( "Question 1106617: If P(n,2)=20 then what is the value of n? Show your solution
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Algebra.Com's Answer #721630 by Alan3354(69443)\"\" \"About 
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If P(n,2)=20 then what is the value of n? Show your solution
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\n" ); document.write( "(n+1)*n = 20
\n" ); document.write( "--> 5*4 = 20
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