document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=861549>Question 861549</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello im studying sets and logic and i need help with some problems im not getting.\r<BR>\n" );
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document.write( "1.Let U =(a,g,k,q,j) A=(a,q,j) B=(k,q) C=(a,j) find A-B\r<BR>\n" );
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document.write( "2.let n(A)=20, n(B)=35, and n(A&#8745;B)=4. Find n(A&#8746;B)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #519142 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=519142\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A-B = {a, j} (elements in A that are not in B)<BR>\n" );
document.write( "By inclusion-exclusion, |A&#8746;B| = |A| + |B| - |A&#8745;B| = 20 + 35 - 4 = 51. </SPAN>\n" );
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