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}
答案:A
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题目内容
己知集合U={1,2,3,4,5,6,7},A={2,4,5,7},则
A=
{1,3,6}
{2,4,5,7}
{1,2,3,4,5,6,7}
{1,2,3,6,7}