document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=332451>Question 332451</A>: <I><SPAN STYLE=\"word-break: break-all;\"> employee identification codes at a company contains 2 letters followed by 2 numbers. all codes are equally likely. find the possible identificaion codes. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #238280 by </B><A HREF=/tutors/aboutme.mpl?userid=jrfrunner><B>jrfrunner(365)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jrfrunner><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=jrfrunner><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=238280\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The answer depends on a couple of things\r<BR>\n" );
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document.write( "-The language used <BR>\n" );
document.write( "-Whether replication is allowed or not<BR>\n" );
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document.write( "Lets assume we are talking about the English language, there are 26 possible letters.\r<BR>\n" );
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document.write( "And of course we'll assume we are talking about the numbers 0 thru 9<BR>\n" );
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document.write( "With replication<BR>\n" );
document.write( "2 letters followed by 2 number:  26*26*10*10 = 67600 codes<BR>\n" );
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document.write( "without replication<BR>\n" );
document.write( "2 letters followed by 2 number:  26*25*10*9 = 58500 codes<BR>\n" );
document.write( "There are 26 choices for the first letter, afterwards there are 25 choices for the second letter, since no replication is allowed.  <BR>\n" );
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