document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=252364>Question 252364</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the units digit of 3^2009?\r<BR>\n" );
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document.write( "(a) 1  (b) 3   (c) 5   (d) 7   (e) 9<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #184239 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=184239\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3^0 = 1<BR>\n" );
document.write( "3^1 = 3<BR>\n" );
document.write( "3^2 = 9<BR>\n" );
document.write( "3^3 = 27<BR>\n" );
document.write( "3^4 = 81<BR>\n" );
document.write( "3^5 = 243<BR>\n" );
document.write( "3^6 = 729<BR>\n" );
document.write( "3^7 = 2187\r<BR>\n" );
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document.write( "the pattern for the units digit repeats 1-3-9-7 (or 3-9-7-1 if you start at 3^1)\r<BR>\n" );
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document.write( "2009 / 4 = 502, with a remainder of 1\r<BR>\n" );
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document.write( "units digit of 3^2009 is the same as 3^1 ___ which is 3 </SPAN>\n" );
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