document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=610090>Question 610090</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 87. Find the next number in the series:<BR>\n" );
document.write( "1, 7, 21, 46, 85, 141,?<BR>\n" );
document.write( "A. 207<BR>\n" );
document.write( "B. 217<BR>\n" );
document.write( "C. 227<BR>\n" );
document.write( "D. 237 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #384146 by </B><A HREF=/tutors/aboutme.mpl?userid=flame8855><B>flame8855(424)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=flame8855><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=flame8855><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=384146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1, 7, 21, 46, 85, 141\r<BR>\n" );
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document.write( "series has differences<BR>\n" );
document.write( "6, 14, 25, 39, 56, <BR>\n" );
document.write( "which has differences<BR>\n" );
document.write( "8, 11, 14, 17, \r<BR>\n" );
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document.write( "11-8 = 3<BR>\n" );
document.write( "so 17 +3 =20<BR>\n" );
document.write( "20+56 = 76<BR>\n" );
document.write( "141+76 = 217\r<BR>\n" );
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document.write( "so the answer is B. 217 </SPAN>\n" );
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