题目内容

己知集合U={1,2,3,4,5,6,7},A={2,4,5,7},则A=

[  ]
A.

{1,3,6}

B.

{2,4,5,7}

C.

{1,2,3,4,5,6,7}

D.

{1,2,3,6,7}

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