document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1091784>Question 1091784</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Insert the missing number 5,11,21,43\r<BR>\n" );
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document.write( "a)85 b) 86 c)87 d) 88 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #706251 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=706251\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br>You can put any number next and it will be a valid sequence.  So it is impossible to know if any answer you come up with is \"right\" in a problem like this.<br><BR>\n" );
document.write( "However, there is a nice pattern in these numbers that suggests a PROBABLE next number:<br><BR>\n" );
document.write( "5 to the next number, 11: double and add 1<BR>\n" );
document.write( "11 to the next number, 21: double and subtract 1<BR>\n" );
document.write( "21 to the next number, 43: [put your answer here]<BR>\n" );
document.write( "43 to the next number, __: [put your answer here] </SPAN>\n" );
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