document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1176631>Question 1176631</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which number is missing from this sequence?\r<BR>\n" );
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document.write( "75 15 ? 5 15 3 13 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #803832 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=803832\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "The question is impossible to answer; any number there would make a valid sequence.<br><BR>\n" );
document.write( "Presumably the author of the problem had a particular pattern in mind which leads to a specific missing number.  But there are almost certainly very different patterns that fit the given numbers and yield a very different missing number.<br><BR>\n" );
document.write( "So the ONLY way to find the RIGHT answer to ANY problem like this is to ask the author of the problem what the answer is.<br><BR>\n" );
document.write( "Therefore, math can't solve this problem; only mind reading can.<br><BR>\n" );
document.write( "Spend as much (or as little) time as you want looking at the problem to see if you can find a logical pattern that produces an answer for the missing number.  But realize while you are doing that that any answer you come up with might not be \"right\".<br><BR>\n" );
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