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已知全集I={1,2,3,4,5,6},A={1,2,3,4},B={3,4,5,6},那么∁I(A∩B)等于()A.{3,4}B.{1,2,5,6}C.{1,2,3,4,5,6}D.∅

题目详情
已知全集I={1,2,3,4,5,6},A={1,2,3,4},B={3,4,5,6},那么∁ I (A∩B)等于(  )
A.{3,4} B.{1,2,5,6}
C.{1,2,3,4,5,6} D.∅
▼优质解答
答案和解析
∵A={1,2,3,4},B={3,4,5,6},
∴A∩B={3,4},
∵全集I={1,2,3,4,5,6},
∴∁ I (A∩B)={1,2,5,6},
故选B.