document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=785333>Question 785333</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A science project consist of three letters followed by three digits and then three more letters. No repetition allowed in the groups, letters in the first group of three may occur also in the last group of three. How many distinct identification numbers are possible? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #477472 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=477472\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> nPr = n!/(n-r)!<BR>\n" );
document.write( "26!/23!= 15600<BR>\n" );
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document.write( "10P3 = 10!/7! = 720<BR>\n" );
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document.write( "15600*720*15600=1.75*10^11<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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