(2013•重庆)已知全集U={1,2,3,4},集合A={1,2},B={2,3},则∁ U (A∪B)=( )
1个回答
D
∵A={1,2},B={2,3},
∴A∪B={1,2,3},
∵全集U={1,2,3,4},
∴∁
U
(A∪B)={4}.
故选D
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