document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=826123>Question 826123</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Calculation of the following:\r<BR>\n" );
document.write( "\n" );
document.write( "1+2+3+4....+97+98+99+100\r<BR>\n" );
document.write( "\n" );
document.write( "I tried an arithmetic sequence a=1(100-1)1 but it wont work. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #497865 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=497865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Calculation of the following: <BR>\n" );
document.write( "1+2+3+4....+97+98+99+100 <BR>\n" );
document.write( "-------<BR>\n" );
document.write( "s(n) = (n/2)(a + L)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "s(100) = (100/2)(1+100)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "s(100) = 50*101<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "s(100) = 5050<BR>\n" );
document.write( "================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "---------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );