document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=696552>Question 696552</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Are there more, less, or the same number of ways to change 7 ties to take with me\r<BR>\n" );
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document.write( "thanks for your help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #429115 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=429115\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how many ways can i choose a set of 4 ties to take with me on a trip, if i have 11 different ties to choose from<BR>\n" );
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document.write( "11*10*9*8 = 7920<BR>\n" );
document.write( "but, choosing ties A, B, C & D is the same as A, C, B & D so it's <BR>\n" );
document.write( "7920/(4*3*2*1) = 330<BR>\n" );
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document.write( "= 11!/((11 - 4)!*4!)<BR>\n" );
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document.write( "I think you're referring to that problem.<BR>\n" );
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document.write( "You can calulcate<BR>\n" );
document.write( "11!/(11-7)!*7! and find it's also 330.<BR>\n" );
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document.write( "Or consider it choosing 4 to leave. </SPAN>\n" );
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