document.write( "Question 202061: Need help:
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document.write( "Use the union rule to answer the question.\r
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document.write( "If n(A) = 5, n(B) = 11, and n(A ∩ B) = 3; what is n(A u B)?
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document.write( " A) 14
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document.write( " B) 16
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document.write( " C) 13
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document.write( " D) 12
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Algebra.Com's Answer #152370 by user_dude2008(1862)![]() ![]() ![]() You can put this solution on YOUR website! n(A u B) = n(A) + n(B) - n(A ∩ B)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "n(A u B) = 5 + 11 - 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "n(A u B) = 16 - 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "n(A u B) = 13\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Ans: C) 13 \n" ); document.write( " |