document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1118741>Question 1118741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me to solve this numbers 50,51,52...70 using this formula SN=N/2(a1+an) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #734159 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52788)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=734159\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "You just have a formula, and you are given that a1 = 50  and  an = 70.\r<BR>\n" );
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document.write( "The only thing that you don't know is the number of terms from 50 to 70.\r<BR>\n" );
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document.write( "Using fingers of your hands, calculate this number.\r<BR>\n" );
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document.write( "Then use the formula.\r<BR>\n" );
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document.write( "That's all.\r<BR>\n" );
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document.write( "Boldly move forward !\r<BR>\n" );
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document.write( "Good Luck ! !\r<BR>\n" );
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document.write( " </SPAN>\n" );
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