document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=624539>Question 624539</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If you had 13 toppings how many different 4 topping pizzas can you make </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #392820 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=392820\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the combination formula...\r<BR>\n" );
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document.write( "n C r = (n!)/(r!(n-r)!)\r<BR>\n" );
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document.write( "13 C 4 = (13!)/(4!*(13-4)!)\r<BR>\n" );
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document.write( "13 C 4 = (13!)/(4!*9!)\r<BR>\n" );
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document.write( "13 C 4 = (13*12*11*10*9!)/(4!*9!)\r<BR>\n" );
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document.write( "13 C 4 = (13*12*11*10)/(4!)\r<BR>\n" );
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document.write( "13 C 4 = (13*12*11*10)/(4*3*2*1)\r<BR>\n" );
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document.write( "13 C 4 = (17160)/(24)\r<BR>\n" );
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document.write( "13 C 4 = 715\r<BR>\n" );
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document.write( "So there are <font color=\"red\">715</font> different pizzas you can make. </SPAN>\n" );
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