摘要:1.已知集合等于 ( ) A.{2.3.4.5.6.7} B.{3.5} C.{3.4.5.6} D.{2.3.5.7.}
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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)等于
[ ]
A.{1,6}
B.{4,5}
C.{1,2,3,4,5,7}
D.{1,2,3,6,7}
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.
{1,2,3,4,5,7}
D.
{1,2,3,6,7}