document.write( "Question 549841: Fond 15c7by hand show work \n" ); document.write( "
Algebra.Com's Answer #358118 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
(n!)/(r!(n-r)!)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(15!)/(7!*(15-7)!)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(15!)/(7!*8!)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(15*14*13*12*11*10*9*8!)/(7!*8!)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(15*14*13*12*11*10*9)/(7!)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(15*14*13*12*11*10*9)/(7*6*5*4*3*2*1)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(32432400)/(5040)\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "6435\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So 15 C 7 = 6435
\n" ); document.write( "
\n" );