document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=190258>Question 190258</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I also got this one wrong, can someone show me the correct way to solve this, please?<BR>\n" );
document.write( "Consider the formula n(A U B) = n(A) + n(B) - n(A &#8745; B). \r<BR>\n" );
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document.write( "(a) Show that this relation holds for A = {1, 2, 3, 4} and B= {2, 4, 5, 6, 7, 8} <BR>\n" );
document.write( "(b) Make up your own two sets A and B, each consisting of at least six elements. Using these two sets, show that the relationship above holds. <BR>\n" );
document.write( "(c ) Use a Venn diagram and explain why the relation holds for any two sets A and B. \r<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 #142773 by </B><A HREF=/tutors/aboutme.mpl?userid=user_dude2008><B>user_dude2008(1862)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=user_dude2008><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=142773\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A &#8745; B = set with common elements in A & B = {2,4}\r<BR>\n" );
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document.write( "n(some set) = # of elements in given set\r<BR>\n" );
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document.write( "n(A) = 4<BR>\n" );
document.write( "n(B) = 6<BR>\n" );
document.write( "n(A &#8745; B) = 2\r<BR>\n" );
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document.write( "n(A U B) = n(A) + n(B) - n(A &#8745; B). \r<BR>\n" );
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document.write( "n(A U B) = 4 + 6 - 2\r<BR>\n" );
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document.write( "n(A U B) = 8\r<BR>\n" );
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document.write( "Ans: n(A U B) = 8 </SPAN>\n" );
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