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.

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.

题型:解答题难度:一般来源:不详
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.
答案
∵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}.
举一反三
已知全集U=A∪B={1,2,3,4,5,6,7},A∩(CUB)={2,4,6},则集合B=(  )
A.{2,4,6}B.{1,3,5}
C.{1,3,5,7}D.{1,2,3,4,5,6,7}
题型:单选题难度:简单| 查看答案
设U=R,A={x|x>0},B={x|x2>1},则A∩(∁UB)=(  )
A.{x|0≤x<1}B.{x|0<x≤1}C.{x|x<0}D.{x|x>1}
题型:单选题难度:简单| 查看答案
已知集合M={x|-1<x<2},N={y|y=-x2+1},则M∩N=(  )
A.{x|-1<x<1}B.{x|-1<x≤1}C.{x|-1<x<2}D.∅
题型:单选题难度:一般| 查看答案
已知集合A={x|x2-3x+2=0}.
(1)如果集合B={x|mx+1=0},并且B⊆A,求m的值;
(2)如果集合B={x|x2-2x+m=0},并且B∪A=A,试确定m的范围.
题型:解答题难度:一般| 查看答案
已知集合M={x
题型:x|<3,x∈Z},N={x难度:| A.8B.6C.4D.25609396746.html">查看答案
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