document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=936008>Question 936008</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I cant find the logic.\r<BR>\n" );
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document.write( "1515=0,<BR>\n" );
document.write( "1670=2,<BR>\n" );
document.write( "1681=3,<BR>\n" );
document.write( "1899=4,<BR>\n" );
document.write( "1989=? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569451 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=569451\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is one of those overused trick/logic problems -- the answer is equal to the number of \"holes\" when writing out the number out (e.g. every 4, 6, or 9 has one hole, every 8 has two holes). Hence the answer is 4. </SPAN>\n" );
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