document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1143052>Question 1143052</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3, -6, 12, 4, 20 what's the equation for this sequence and the next no. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #763850 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=763850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "The question is invalid.<br><BR>\n" );
document.write( "(1) The next number could be anything and it would be a valid sequence.<br><BR>\n" );
document.write( "(2) There are many possibilities for \"the equation for this sequence\"; the different possibilities will probably produce different next numbers.  Any equation you find, or any pattern you find for producing the given numbers, might not be the \"right\" answer.<br><BR>\n" );
document.write( "Lacking any specific information, in ANY problem like this, about WHAT KIND of sequence it is, the \"right\" answers cannot be determined. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );