已知全集U={1,2,3,4,5,6,7,8,9,10},集合A={2,3,5,9},集合B={4,5,6,7,9},则(∁UA)∩(∁UB)=( )A. {5,9}B. {2,3}C. {1,8,10}D. {4,6,7}
问题描述:
已知全集U={1,2,3,4,5,6,7,8,9,10},集合A={2,3,5,9},集合B={4,5,6,7,9},则(∁UA)∩(∁UB)=( )
A. {5,9}
B. {2,3}
C. {1,8,10}
D. {4,6,7}
答
知识点:此题考查了交、并、补集的混合运算,熟练掌握各自的定义是解本题的关键.
∵全集U={1,2,3,4,5,6,7,8,9,10},集合A={2,3,5,9},集合B={4,5,6,7,9},
∴∁UA={1,2,4,6,7,8,10},∁UB={1,2,3,8,10},
则(∁UA)∩(∁UB)={1,8,10}.
故选:C.
答案解析:根据全集U,以及A与B,求出A与B的补集,找出两补集的交集即可.
考试点:交、并、补集的混合运算.
知识点:此题考查了交、并、补集的混合运算,熟练掌握各自的定义是解本题的关键.