document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=169011>Question 169011</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the letters A, B, C, D, E, and F are used in a five-letter code, how many different codes are possible if repetitions are not permitted?\r<BR>\n" );
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document.write( "a) 625<BR>\n" );
document.write( "b) 720<BR>\n" );
document.write( "c) 7776<BR>\n" );
document.write( "d) 1296\r<BR>\n" );
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document.write( "I am completely confused.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #124644 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=124644\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the letters A, B, C, D, E, and F are used in a five-letter code, how many different codes are possible if repetitions are not permitted? <BR>\n" );
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document.write( "For the 1st letter, you can choose one of 6. For the 2nd, one of the remaining 5, then 4, 3, 2.  So the possibilities are 6*5*4*3*2*1, or 6! (6 factorial).<BR>\n" );
document.write( "That's 720. </SPAN>\n" );
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