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={1,2,3}, ={2,3,4},则∁U.(A.∩B.)=( ) A.{2,3}B.{1,4,5} {4,5} {1,5}
{2,4,5} {1,3,4} {1,2,4} {2,3,4,5}
∅ {1,4,5} {1,2,3,4,5} {2,3}
={1,2,3},集合 ={2,3,4},则A.∩B.等于( ) A.{2,3}B.{1,2} {3,4} {1,2,3,4}
{2,4,5} {1,3,4} {1,2,4} {2,3,4,5}
{1,2,3} {1,3,4} {1,2,4} {2,3,5}
={1,2,3}, ={2,3,4},则∁U.(A.∩B)=( ) A.{2,3}B.{1,4,5} {4,5} {1,5}
(2,3,4) (1,3,4) (2,3,5) (2,4,5)
={1,2,3}, ={2,4},则(∁U.A.)∪B.为( ) A.{1,2,4}B.{2,4,5} {0,2,4} {0,2,3,4}
{1,2,3} {1,2,5} {2,3,5} {0,1,5}
={x|x≥3}, ={1,2,3,4,5}则A.∩B.=( ) A.{1,2,3}B.{2,3,4} {3,4,5} {1,2,3,4,5}
={2,4,5},则∁U.A.=( ) A.∅ {1,3,5} {1,3,6,7} {1,3,5,7}
{1,2} {5} {1,2,3} {3,4,6}
1,2,3 2,3,5 2,4,5 2,3,6 1,4,5