设全集U={x|x≤8,x∈N*},若A∩(CUB)={1,8},(CUA)∩B={2,6},(CUA)∩(CUB)={4,7}A.A={1,8},B={2,6}B.A={1,3,5,8},B={2,3,5,6}C.A={1,8},B={2,3,5,6}D.A={1,3,8},B={2,5,6}
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![设全集U={x|x≤8,x∈N*},若A∩(CUB)={1,8},(CUA)∩B={2,6},(CUA)∩(CUB)={4,7}A.A={1,8},B={2,6}B.A={1,3,5,8},B={2,3,5,6}C.A={1,8},B={2,3,5,6}D.A={1,3,8},B={2,5,6}](/uploads/image/z/7217111-47-1.jpg?t=%E8%AE%BE%E5%85%A8%E9%9B%86U%3D%7Bx%7Cx%E2%89%A48%2Cx%E2%88%88N%2A%7D%2C%E8%8B%A5A%E2%88%A9%EF%BC%88CUB%29%3D%7B1%2C8%7D%2C%28CUA%29%E2%88%A9B%3D%7B2%2C6%7D%2C%28CUA%29%E2%88%A9%EF%BC%88CUB%29%3D%7B4%2C7%7DA.A%3D%7B1%2C8%7D%2CB%3D%7B2%2C6%7DB.A%3D%7B1%2C3%2C5%2C8%7D%2CB%3D%7B2%2C3%2C5%2C6%7DC.A%3D%7B1%2C8%7D%2CB%3D%7B2%2C3%2C5%2C6%7DD.A%3D%7B1%2C3%2C8%7D%2CB%3D%7B2%2C5%2C6%7D)
设全集U={x|x≤8,x∈N*},若A∩(CUB)={1,8},(CUA)∩B={2,6},(CUA)∩(CUB)={4,7}A.A={1,8},B={2,6}B.A={1,3,5,8},B={2,3,5,6}C.A={1,8},B={2,3,5,6}D.A={1,3,8},B={2,5,6}
设全集U={x|x≤8,x∈N*},若A∩(CUB)={1,8},(CUA)∩B={2,6},(CUA)∩(CUB)={4,7}
A.A={1,8},B={2,6}
B.A={1,3,5,8},B={2,3,5,6}
C.A={1,8},B={2,3,5,6}
D.A={1,3,8},B={2,5,6}
设全集U={x|x≤8,x∈N*},若A∩(CUB)={1,8},(CUA)∩B={2,6},(CUA)∩(CUB)={4,7}A.A={1,8},B={2,6}B.A={1,3,5,8},B={2,3,5,6}C.A={1,8},B={2,3,5,6}D.A={1,3,8},B={2,5,6}
A∩(CUB)={1,8} 所以A里面肯定有1,8 B里面肯定没有
(CUA)∩B={2,6} 所以A里面肯定没有2,6 B里面肯定有
(CUA)∩(CUB)={4,7} 所以A和B里面 都肯定没有4,7
全集U={x|x≤8,x∈N*} 所以 U里面只可能是1 2 3 4 5 6 7 8
再根据上面的整理之后 得出
A里面有1,3,5,8 B里面有2,3,5,6,
应该选择B
因为这一题是选择题 ,所以可以用排除法! 把每一个答案带进去就知道了
你问一下同学和老师
B啊
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