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1.1.3《集合间的基本运算》同步训练题1.已知集合U={1,3,5,7,9},A={1,5,7},则CUA=()A.{1,3}B.{3,7,9}C.{3,5,9}D.{3,9}2.集合A={x|-1≤x≤2},B={x|x<1},则A∩(CRB)=()A.{x|x>1}B.{x|x≥1}C.{x|1<x≤2}D.{x|1≤x≤2}3.已知全集U=Z,集合A={x|x2=x},B={-1,0,1,2},则图中的阴影部分所表示的集合等于()A.{-1,2}B.{-1,0}C.{0,1}D.{1,2}4.已知全集U={1,2,3,4,5},且A={2,3,4},B={1,2},则A∩(CUB)等于()A.{2}B.{5}C.{3,4}D.{2,3,4,5}5.已知全集U={0,1,2},且CUA={2},则A=()A.{0}B.{1}C.∅D.{0,1}6.设集合A={4,5,7,9},B={3,4,7,8,9},全集U=A∪B,则集合CU(A∩B)中的元素共有()A.3个B.4个C.5个D.6个7.已知集合U={2,3,4,5,6,7},M={3,4,5,7},N={2,4,5,6},则()A.M∩N={4,6}B.M∪N=UC.(CUN)∪M=UD.(CUM)∩N=N8.已知全集U={1,2,3,4,5},集合A={x|x2-3x+2=0},B={x|x=2a,a∈A},则集合CU(A∪B)中元素个数为()A.1B.2C.3D.49.已知全集U=A∪B中有m个元素,(CUA)∪(CUB)中有n个元素.若A∩B非空,则A∩B的元素个数为()A.mnB.m+nC.n-mD.m-n10.已知全集U={x|1≤x≤5},A={x|1≤x<a},若CUA={x|2≤x≤5},则a=________.11.设集合U={1,2,3,4,5},A={2,4},B={3,4,5},C={3,4},则(A∪B)∩(CUC)=________.12.已知全集U={2,3,a2-a-1},A={2,3},若CUA={1},则实数a的值是________.13.设集合A={x|x+m≥0},B={x|-2<x<4},全集U=R,且(CUA)∩B=∅,则实数m的取值范围为________.14.已知全集U=R,A={x|-4≤x<2},B={x|-1<x≤3},P={x|x≤0或x≥},求A∩B,(CUB)∪P,(A∩B)∩(CUP).4
15.设A={-4,2a-1,a2},B={a-5,1-a,9},已知A∩B={9},求a的值,并求出A∪B.16.已知集合A={x|2a-2
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