document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=634525>Question 634525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1+2+3+4+5+6+7+8+9+10+..........+97+98+99 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399709 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=399709\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1+2+3+4+5+6+7+8+9+10+..........+97+98+99<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "That's the sum of 99 numbers. Put a zero in front:<BR>\n" );
document.write( "0+1+2+3+4+5+6+7+8+9+10+..........+97+98+99<BR>\n" );
document.write( "Now there are 100 numbers.<BR>\n" );
document.write( "Make them 50 pairs: 0+99, 1+98, 2+97, etc<BR>\n" );
document.write( "--> 50 pairs, each pair is 99<BR>\n" );
document.write( "50*99 = 4950<BR>\n" );
document.write( "============<BR>\n" );
document.write( "Or use Excel<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );