document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=390865>Question 390865</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many 5-digit numbers have at least one zero? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #277214 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=277214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First, find the total number of 5-digit numbers:\r<BR>\n" );
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document.write( "9*10*10*10*10 = 90000 (10 digits for each placeholder except the first)\r<BR>\n" );
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document.write( "Then, find the number of 5-digit numbers with *no* zeros (so that we can subtract from 90000 and find the number of 5-digit numbers with at least one 0):\r<BR>\n" );
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document.write( "9*9*9*9*9 = 59049 (9 digits for each placeholder)\r<BR>\n" );
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document.write( "90000 - 59049 = 30951.\r<BR>\n" );
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