document.write( "Question 168921: Find C(18,1) \n" ); document.write( "
Algebra.Com's Answer #124571 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
You are talking about a \"combination\".
\n" ); document.write( ".
\n" ); document.write( "C(n,r) = n!/r!(n-r)!
\n" ); document.write( ".
\n" ); document.write( "C(18,1) = 18!/1!(18-1)!
\n" ); document.write( "C(18,1) = 18!/(17)!
\n" ); document.write( "C(18,1) = 18
\n" ); document.write( "
\n" ); document.write( "
\n" );