document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1046732>Question 1046732</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Your bank assigns a 4-digit personal identification number (PIN). The first digit cannot be 0. How many different number combinations 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 #662213 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=662213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "In all, there are 10 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.\r<BR>\n" );
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document.write( "Zero is prohibited in the first position.\r<BR>\n" );
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document.write( "No other restrictions.\r<BR>\n" );
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document.write( "9 options for the first position and 10 options for any of 2-nd, 3-rd and 4-th position.\r<BR>\n" );
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document.write( "The number of combinations is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2A10%5E3 ALIGN=MIDDLE  ALT=\"9%2A10%5E3\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 9000.\r<BR>\n" );
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