document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121829>Question 1121829</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A and B are subsets of universal set U. If n(U)=28, n(A)=11, n(B&#8242;)=19, and n(A&#8746;B)=18, find the number of elements in each of the following sets. \r<BR>\n" );
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document.write( "What is n(A&#8745;B)? <BR>\n" );
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document.write( "What is n(A&#8242;&#8745;B)? <BR>\n" );
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document.write( "What is n(A&#8746;B&#8242;)?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #737816 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=737816\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "Since n(U) = 28 and n(B') = 19, n(B) must be 28 - 19 = 9.\r<BR>\n" );
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document.write( "Since n(A) + n(B) = 20 and n(A&#8746;B) = 18, then n(A&#8745;B) = 20 - 18 = 2]<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi}\ +\ 1\ =\ 0\"><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large \ \\r\"> </SPAN>\n" );
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