摘要:1. 已知全集 I ={1.2.3.4.5.6.7}. M ={3.4.5}.N={1.3.6}.则集合 {2.7}等于 ( ) A. B. C. D.
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已知全集I={1,2,3,4,5,6,7,8},A={3,4,5},B={1,3,6},那么集合{2,7,8}是
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A.A∪B |
B.A∩B |
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C.CUA ∪CUB |
D.CUA ∩ CUB |