问题
选择题
设全集U={1,3,5,6,8},A={1,6},B={5,6,8},则(CUA)∩B=
(A){6} (B){5,8} (c){6,8} (D){3,5,6,8}
答案
答案:B
由于U={1,3,5,6,8},A={1,6} ∴CUA={3,5,8}∴(CUA)∩B={5,8}
设全集U={1,3,5,6,8},A={1,6},B={5,6,8},则(CUA)∩B=
(A){6} (B){5,8} (c){6,8} (D){3,5,6,8}
答案:B
由于U={1,3,5,6,8},A={1,6} ∴CUA={3,5,8}∴(CUA)∩B={5,8}