document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=83780>Question 83780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I :<BR>\n" );
document.write( "Find the sum of the first 400 natural numbers. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #60257 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=60257\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 400+1=401 ... 399+2=401 ... 398+3=401 ... this pattern leads to the solution ... 401*200=80200\r<BR>\n" );
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document.write( "in general,  ((first term)+(last term))*(half the number of terms)\r<BR>\n" );
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document.write( "in this case (400+1)*200=80200 </SPAN>\n" );
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