document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040178>Question 1040178</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question- <BR>\n" );
document.write( "2+2=10<BR>\n" );
document.write( "4+3=13<BR>\n" );
document.write( "4+7=?\r<BR>\n" );
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document.write( "Options are-<BR>\n" );
document.write( "40<BR>\n" );
document.write( "13<BR>\n" );
document.write( "169<BR>\n" );
document.write( "70 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #654975 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=654975\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "For me, all options are irrelevant.\r<BR>\n" );
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document.write( "The correct answer is 23.\r<BR>\n" );
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document.write( "It is about writing numbers in 4-based digital system.\r<BR>\n" );
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