document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=346329>Question 346329</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do i find the sum of the numbers 2 + 4 + 6 +....+ 96 + 98 without adding each number up individually? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #247665 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=247665\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is an arithmetic sequence.<BR>\n" );
document.write( "S[n]=n/2(a[1]+a[n]) where n is the number of terms, s=sum, a=a term of the sequence.<BR>\n" );
document.write( "n=98/2=49<BR>\n" );
document.write( "S=49/2(2+98)<BR>\n" );
document.write( "=49/2 * 100<BR>\n" );
document.write( "=4900/2<BR>\n" );
document.write( "=2450<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );