设全集I={1,2,3,4,5,6},集合A={1,3,5},则∁IA=______. |
∵全集I={1,2,3,4,5,6},集合A={1,3,5},则∁IA={2,4,6}, 故答案为 {2,4,6}. |
核心考点
试题【设全集I={1,2,3,4,5,6},集合A={1,3,5},则∁IA=______.】;主要考察你对
集合运算等知识点的理解。
[详细]
举一反三
集合U={1,2,3,4,5},集合A={2,4},则∁UA=( )A.{1,3,5} | B.{1,2,3} | C.{1,2,4,5} | D.{1,4} |
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已知全集U={l,2,3,4,5,6,7},A={2,4,5),则∁UA=( )A.{1,3,5,6,7} | B.{1,3,4,6,7} | C.(1,4,5,6,7} | D.{1,3,6,7} |
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已知全集U=R,集合A={x|x2-2x>0 },B={x|y=1g(x-1),则(∁UA)∩B=( )A.{x|x>2或x<0} | B.{x|1<x<2 | C.{x|1≤x≤2} | D.{x|1<x≤2} |
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已知集合A={x题型:x-a|<1},B={x|≤1},若A⊆B,则实数a的取值范围是______. |
难度:|
查看答案 设集合P={1,2,3,4},Q={x|3≤x<7,x∈N},则P∪Q=( )A.∅ | B.{3,4} | C.{1,2,5,6} | D.{1,2,3,4,5,6} |
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