document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1024776>Question 1024776</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you answer this  question.<BR>\n" );
document.write( "this is it.\r<BR>\n" );
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document.write( "18       5          3         1<BR>\n" );
document.write( "36       7          4         2<BR>\n" );
document.write( "45       6          5         3<BR>\n" );
document.write( "???      3          2         1\r<BR>\n" );
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document.write( "Find the question mark.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #640140 by </B><A HREF=/tutors/aboutme.mpl?userid=mathmate><B>mathmate(429)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathmate><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=mathmate><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=640140\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  <BR>\n" );
document.write( "Question:<BR>\n" );
document.write( "Can you answer this  question.<BR>\n" );
document.write( "this is it.<BR>\n" );
document.write( "18       5          3         1<BR>\n" );
document.write( "36       7          4         2<BR>\n" );
document.write( "45       6          5         3<BR>\n" );
document.write( "???      3          2         1<BR>\n" );
document.write( "Find the question mark. <BR>\n" );
document.write( " <BR>\n" );
document.write( "Solution:<BR>\n" );
document.write( "There can be many solutions to this class of problems where no rule dictates.<BR>\n" );
document.write( "As long as all four lines (or column, or otherwise) satisfy the same rule that we invent, the answer should be deemed among the correct ones.\r<BR>\n" );
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document.write( "I suggest others to provide other answers.\r<BR>\n" );
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document.write( "My solution goes along the following lines:<BR>\n" );
document.write( "3(5+1)=18<BR>\n" );
document.write( "4(7+2)=36<BR>\n" );
document.write( "5(6+3)=45<BR>\n" );
document.write( "therefore<BR>\n" );
document.write( "2(3+1)=<b>8</b> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );