document.write( "Question 1194344: Math\r
\n" ); document.write( "\n" ); document.write( "Given universal set U= {10,20,30,40,50,60,70,80,90}
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Algebra.Com's Answer #826531 by Edwin McCravy(20059) $\"\"$ $\"About$

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Given universal set U= {10,20,30,40,50,60,70,80,90}
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document.write( "Substitute the sets for the letters:\r\n" );
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document.write( "A ∩ B\r\n" );
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document.write( "{20,40,60,80} ∩ {30,60,90}\r\n" );
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document.write( "The symbol ∩ is for intersection, which means to\r\n" );
document.write( "make a set that contains only the elements which\r\n" );
document.write( "are common to both sets.  So the answer is\r\n" );
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document.write( "{60}  \r\n" );
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document.write( "That's because 60 is the only element in common \r\n" );
document.write( "to both sets.\r\n" );
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document.write( "Edwin

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