document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1152304>Question 1152304</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find some value R, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R%21%2F%28%28R-3%29%21%28R-4%29%21%29=1 ALIGN=MIDDLE  ALT=\"R%21%2F%28%28R-3%29%21%28R-4%29%21%29=1\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Find the sum of the digits of R.\r<BR>\n" );
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document.write( "R! over (R-3)!(R-4)! = 1  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #774301 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><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=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=774301\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> R!/((R-3)!(R-4)!) = 1\r<BR>\n" );
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document.write( "Using trial and error...<BR>\n" );
document.write( "8!/(5!*4!) = 8*7*6/(4!) = 336/24 > 1<BR>\n" );
document.write( "9!/(6!*5!)  = 9*8*7/(5!) = 504/120 > 1<BR>\n" );
document.write( "10!/(7!*6!) = 10*9*8/(6!) = 720 / 720 = 1\r<BR>\n" );
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document.write( "So <b>R = 10</b> satisifies the equation.<BR>\n" );
document.write( "The sum of the digits of R is equal to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+highlight%28+1+%29+ ALIGN=MIDDLE  ALT=\"+highlight%28+1+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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