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    9．已知集合U={1,2,3,4,5,6,7}, A={2,4,5,7},B={3,4,5},则(uA)∪(uB)= ( ) A．{1,6} B．{4,5} C．{1,2,3,4,5,7} D．{1,2,3,6,7} 【查看更多】

     

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    已知集合U={1,2,3,4,5,6,7},A={2,4,5,7},B={3,4,5},则(A)∪(B)等于(    )

    A.{1,6}               B.{4,5}              C.{2,3,4,5,7}            D.{1,2,3,6,7}

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    已知集合U={1,2,3,4,5,6,7},A={2,4,5,7},B={3,4,5},则(A)∩B等于

    A.{1,6}               B.{3}               C.{2,3,4,5,7}               D.{1,3,4,6,7}

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    已知集合U={1,2,3,4,5,6,7}, A={2,4,5,7},B={3,4,5},则(uA)∪(uB)=

    (A){1,6}        (B){4,5}         (C){1,2,3,4,5,7}              (D){1,2,3,6,7}

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    已知集合U={1,2,3,4,5,6,7}, A={2,4,5,7},B={3,4,5},则(uA)∪(uB)=         .

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    已知集合U={1,2,3,4,5,6,7}, A={2,4,5,7},B={3,4,5},则=___     _

     

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