设全集U={1,2,3,4,5,6,7,8},集合A={5,6,7,8},B={2,4,6,8},求A∩B,CUA和CUB.
问题描述:
设全集U={1,2,3,4,5,6,7,8},集合A={5,6,7,8},B={2,4,6,8},求A∩B,CUA和CUB.
答
∵全集U={1,2,3,4,5,6,7,8},集合A={5,6,7,8},B={2,4,6,8},
∴A∩B={6,8},CUA={1,2,3,4},CUB={1,3,5,7}.