document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1095097>Question 1095097</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are 50 students in class. 40 students wear glasses and 30 have dark hair. What is the minimum number of students in class that wear glasses and have dark hair?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #709644 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52788)</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=709644\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "The minimum number of students in class that wear glasses and have dark hair is 20.\r<BR>\n" );
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document.write( "It is the minimal cardinality of the intersection of these two sub-sets.\r<BR>\n" );
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