document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1160041>Question 1160041</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ow many​ 7-digit telephone numbers are possible if the first digit cannot be six and <BR>\n" );
document.write( "​(a) only even digits may be​ used?<BR>\n" );
document.write( "​(b) the number must be a multiple of 10​ (that is, it must end in​ 0)?<BR>\n" );
document.write( "​(c) the number must be a multiple of 1 comma 000​?<BR>\n" );
document.write( "​(d) the first 3 digits are 192​?<BR>\n" );
document.write( "​(e) no repetitions are​ allowed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #783320 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=783320\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. Even digits are 2,4,6,8,0.<BR>\n" );
document.write( "4 ways to choose the first*5^6=62,500<BR>\n" );
document.write( "b. then there are 10^6 or 1 million.<BR>\n" );
document.write( "c. then there are 10^4 or 10,000<BR>\n" );
document.write( "d. then there are also 10^4 or 10,000<BR>\n" );
document.write( "e. 10*9*8*7*6*5*4=604,800 </SPAN>\n" );
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