题目
题型:单选题难度:一般来源:乐山一模
A.{1,3,5,6,7} | B.{1,3,4,6,7} | C.(1,4,5,6,7} | D.{1,3,6,7} |
答案
∁UA={l,3,6,7}
故D.
核心考点
试题【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}】;主要考察你对集合运算等知识点的理解。[详细]
举一反三
A.{x|x>2或x<0} | B.{x|1<x<2 | C.{x|1≤x≤2} | D.{x|1<x≤2} |
A.∅ | B.{3,4} |
C.{1,2,5,6} | D.{1,2,3,4,5,6} |
A.[3,+∞) | B.(-∞,1) | C.[1,3) | D.∅ |