document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1202857>Question 1202857</A>: <I><SPAN STYLE=\"word-break: break-all;\"> From a selection of sixteen courses fulfilling a humanities requirement, a student must pick any four to take. How many different combinations of courses are possible?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #838026 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=838026\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> c(n,x) is the formul to use.<BR>\n" );
document.write( "n is the number of possibe choices.<BR>\n" );
document.write( "x is the number of choices to extract from that.<BR>\n" );
document.write( "n = 16<BR>\n" );
document.write( "4 = x<BR>\n" );
document.write( "c(n,x) = n! / (x! * (n-x)!)<BR>\n" );
document.write( "when n = 16 and x = 4, the equation becomes c(16,4) = 16! / (4! * 12!) = (16 * 15 * 14 * 13 * 12!) / (4! * 12!) = (16 * 15 * 14 * 13) / (4 * 3 * 2 * 1) = 1820.\r<BR>\n" );
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