document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1191515>Question 1191515</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question 1\r<BR>\n" );
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document.write( "please help me with this question.\r<BR>\n" );
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document.write( "If the universal set U= {l,m,n,o,p,q,r,s,t,u,v,w,x,y,z} has subsets\r<BR>\n" );
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document.write( "A= {z,y,x,w,v,u}\r<BR>\n" );
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document.write( "B= {x,w,v,t,s,r}\r<BR>\n" );
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document.write( "C= {u,v,p,q,r}\r<BR>\n" );
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document.write( "Find the elements in A n B n C (A intersection B intersection C)<BR>\n" );
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document.write( "in A n B n C will be element that are in all three sets, A, B, and C\r<BR>\n" );
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document.write( "A= {z,y,x,w,v,u}<BR>\n" );
document.write( "B= {x,w,v,t,s,r}<BR>\n" );
document.write( "C= {u,v,p,q,r}\r<BR>\n" );
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document.write( "first find (A n B)= {z,y,x,w,v,u} n {x,w,v,t,s,r} = {x,w,v}\r<BR>\n" );
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document.write( "then (A n B )n C={x,w,v} n {u,v,p,q,r}= {v}\r<BR>\n" );
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document.write( "so,A n B n C= {v}  (only v is element of all sets) </SPAN>\n" );
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