document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=927486>Question 927486</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the missing number in the sequence below?<BR>\n" );
document.write( "4,7,12,21, (), 71 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #563069 by </B><A HREF=/tutors/aboutme.mpl?userid=srinivas.g><B>srinivas.g(540)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=srinivas.g><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=srinivas.g><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=563069\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ANswer is 38<BR>\n" );
document.write( "4*2-1  =7<BR>\n" );
document.write( "7*2-2 =12<BR>\n" );
document.write( "12*2-3=21<BR>\n" );
document.write( "21*2-4=38<BR>\n" );
document.write( "38*2-5=71<BR>\n" );
document.write( "so result : 38 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );