问题
选择题
设全集U={1,2,3,4,5,6,7,8},集合S={1,3,5},T={3,6},则CU(S∪T)等于( )
A.φ
B.{2,4,7,8}
C.{1,3,5,6}
D.{2,4,6,8}
答案
∵S∪T={1,3,5,6},
∴CU(S∪T)={2,4,7,8}.
故选B.
设全集U={1,2,3,4,5,6,7,8},集合S={1,3,5},T={3,6},则CU(S∪T)等于( )
A.φ
B.{2,4,7,8}
C.{1,3,5,6}
D.{2,4,6,8}
∵S∪T={1,3,5,6},
∴CU(S∪T)={2,4,7,8}.
故选B.