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{1,2,3,4,6} {1,2,3,4,5} {1,2,5} {1,2}
={1,2,3}, ={2,5},则A.∩=( ) A.{2}B.{2,3} {3} {1,3}
={1,2,3}, ={2,3,4},则∁U.(A.∩B.)=( ) A.{2,3}B.{1,4,5} {4,5} {1,5}
∅ {1,4,5} {1,2,3,4,5} {2,3}
{1,3,1,2,4,5} {1} {1,2,3,4,5} {2,3,4,5}
={1,2,3}, ={2,3,4},则∁U.(A.∩B)=( ) A.{2,3}B.{1,4,5} {4,5} {1,5}
{1,2,3,5} {1,2,3,4} {2,3} {1}
={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}
{1,3} {2,4} {1,2,3,5} {2,5}
{1,2,3} {1,3,5} {1,4,5} {2,3,4}
={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}
={1,2,3}, ={3,4,5},则 (A.){1,2,3,4} (B.){1,2,4,5} ( ){1,2,5} ( ){3}