问题
选择题
设U={0,1,2,3,4},A={0,1,2,3},B={2,3,4},则 (C∪A)∪(C∪B)=( )
A.{0,1,2,3,4}
B.{0,1,4}
C.{0,1}
D.{0}
答案
∵CUA={4},CUB={0,1},
∴(CUA)∪(CUB)={4}∪{0,1}={0,1,4}.
故选B.
设U={0,1,2,3,4},A={0,1,2,3},B={2,3,4},则 (C∪A)∪(C∪B)=( )
A.{0,1,2,3,4}
B.{0,1,4}
C.{0,1}
D.{0}
∵CUA={4},CUB={0,1},
∴(CUA)∪(CUB)={4}∪{0,1}={0,1,4}.
故选B.