document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=916586>Question 916586</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have tried solving this type of question multiple times, I am not sure if I am missing a step somewhere. The question is:\r<BR>\n" );
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document.write( "A insurance fraud inspector is going to audit 7 people from a pool of 18 people. How many different combinations are there?\r<BR>\n" );
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document.write( "I'm pretty sure you would use the formula 18!/ 7!(18-7)! however, my calculator does not have n! or any others to work these formulas so I am having to plug everything in on my own in my calculator. Have read thoroughly through my book and professor provided no lecture for this unit. In desperate need of explaining. I know that when the order doesn't matter, but you don't have the same total you would do 18*17*16....etc. Not sure what I'm doing wrong.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #556138 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=556138\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Yes, 18C7 = 18!/ 7!(18-7)! =<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2818%2A17%2A16%2A15%2A14%2A12%29%2F%287%2A6%2A5%2A4%2A3%2A2%2A1%29 ALIGN=MIDDLE  ALT=\"%2818%2A17%2A16%2A15%2A14%2A12%29%2F%287%2A6%2A5%2A4%2A3%2A2%2A1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=  31824 Using Calculator<BR>\n" );
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document.write( "IF the Order, the 7 choices, are in  matters...that's 18P7<BR>\n" );
document.write( "18P7 = 18!/(18-7)! = 18!/11! =  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2A17%2A16%2A15%2A14%2A12 ALIGN=MIDDLE  ALT=\"18%2A17%2A16%2A15%2A14%2A12\"   DISABLED_style= \"max-width:90%; height:auto;\" >  = 160,392,960 (child's play on a calculator<BR>\n" );
document.write( "These concepts has nothing to do with the order You multiply <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2A17%2A16%2A15%2A14%2A12 ALIGN=MIDDLE  ALT=\"18%2A17%2A16%2A15%2A14%2A12\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2A16%2A17%2A12%2A14%2A15 ALIGN=MIDDLE  ALT=\"18%2A16%2A17%2A12%2A14%2A15\"   DISABLED_style= \"max-width:90%; height:auto;\" > for ex <BR>\n" );
document.write( "If You can use a calculator in class/testing... You must have one with a reasonable capability.<BR>\n" );
document.write( "....<BR>\n" );
document.write( " Time is of an essence...in homework as well as testing.<BR>\n" );
document.write( "Factorial capability (n!) is a minimum (and my guess would be any $12 calculator would have that n! button)<BR>\n" );
document.write( "albeit it pricey, the TI83 or later is very popular for statistic students,<BR>\n" );
document.write( "albeit it takes time to learn how to use it to its max. </SPAN>\n" );
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