document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=342323>Question 342323</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the sum of the first 500 counting numbers? i.e. The sum of 1+2+3+4+...496+497+498+499+500?  How about only the odds: 1+3+5+7+...493+495+497+499? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #245077 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=245077\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the sum of the first 500 counting numbers? i.e. The sum of 1+2+3+4+...496+497+498+499+500?<BR>\n" );
document.write( "That's 500 numbers.<BR>\n" );
document.write( "Put them in pairs:<BR>\n" );
document.write( "1 & 500<BR>\n" );
document.write( "2 & 499<BR>\n" );
document.write( "3 & 498 etc<BR>\n" );
document.write( "There are 250 pairs, each pair = 501<BR>\n" );
document.write( "250*501 = 125250<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "How about only the odds: 1+3+5+7+...493+495+497+499?<BR>\n" );
document.write( "That's 250 numbers.<BR>\n" );
document.write( "Pair them up like above.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );