document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1020300>Question 1020300</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a 4-digit pin. Numbers allowed for each digit are 0 thru 9. The numbers do not have to be used only once, but can be used up to 4 times. (Ex.: 1111, 1010, etc.).\r<BR>\n" );
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document.write( "How many possible combinations/permutations exist for this 4-digit code, or a 6-digit code?  Could you please include the formula used to obtain the answer?\r<BR>\n" );
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document.write( "Thank you,\r<BR>\n" );
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document.write( "David  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #636198 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=636198\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Fundamental counting principle.<BR>\n" );
document.write( "For 4 digits,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=N%5B4%5D=10%2A10%2A10%2A10 ALIGN=MIDDLE  ALT=\"N%5B4%5D=10%2A10%2A10%2A10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=N%5B4%5D=10000 ALIGN=MIDDLE  ALT=\"N%5B4%5D=10000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "For 6 digits,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=N%5B6%5D=10%2A10%2A10%2A10%2A10%2A10 ALIGN=MIDDLE  ALT=\"N%5B6%5D=10%2A10%2A10%2A10%2A10%2A10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=N%5B6%5D=1000000 ALIGN=MIDDLE  ALT=\"N%5B6%5D=1000000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );