摘要:13.集合S={1.2.3}.集合T={2.3.4.5}.则S∩T= .
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设全集U={1,2,3,4,5,6,7,8},集合S={1,3,5},T={3,6},则
(S∪T)等于
[ ]
A.
![]()
B.
{2,4,7,8}
C.
{1,3,5,6}
D.
{2,4,6,8}
设全集U={1,2,3,4,5,6,7,8},集合S={1,3,5},T={3,7},则
(S∪T)等于
[ ]
A.
![]()
B.
{2,4,7,8}
C.
{1,3,5,6}
D.
{2,4,6,8}
设全集U={1,2,3,4,5,6,7,8},集合S={1,3,5},T={3,6},则
U(S∪T)等于
[ ]
A.![]()
B.{2,4,7,8}
C.{1,3,5,6}
D.{2,4,6,8}