document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=255633>Question 255633</A>: <I><SPAN STYLE=\"word-break: break-all;\"> computer with an old processor locks up if more than 4 application are running. 20 applications stored in program file. how many different sets of 4 can run </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #187845 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=187845\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> nCr=n!/((n-r)!r!) Combination of n things taken r at a time.<BR>\n" );
document.write( "20C4=20!/((20-4)!4!<BR>\n" );
document.write( "=4845 different sets<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
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