document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978798>Question 978798</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A person selects 5 letters from the word \"Combine\" & arranges them.  How many ways can they do this? \r<BR>\n" );
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document.write( " When I did the problem I used n C r (7 C 5 ) but when I checked my answer in my notes, I put nPr<BR>\n" );
document.write( "(7 P 5) , but I don't understand why. Please explain why using nPr is the correct way to go about this problem.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #600192 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=600192\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Order matters. Something like \"combi\" is different from \"icomb\". That's why nPr is used instead of nCr. </SPAN>\n" );
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