document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=38039>Question 38039</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Evaluate C (10, 4) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #23533 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=23533\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Any number of n things taken r at a time is C(n, r) and equals<BR>\n" );
document.write( "C(n, r) = n! / r!(n-r)!<BR>\n" );
document.write( "So here<BR>\n" );
document.write( "C(10, 4) = 10! / 4!(10-4)! = 10 * 9 * 8 * 7 / 4 * 3 * 2 * 1 = 210 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );