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={2,3,5},集合 ={1,3,4,6},则集合A.∩∁UB=( ) A.{3} B.{2,5} {1,4,6} {2,3,5}
{1,2,3,4,6} {1,2,3,4,5} {1,2,5} {1,2}
{1,2,3,4,6} {1,2,3,4,5} {1,2,5} {1,2}
{3} {2,5} {2,3,5} {1,4,6}
{1} {3,5} {1,6} {1,3,5,6}
{1,2} {5} {1,2,3} {3,4,6}
={2,3,5},集合 ={1,3,4,6},则集合A.∩∁U.B.=( ) A.{3}B.{2,5} {1,4,6} {2,3,5}
={1,2,4},集合 ={3,6},则∁U.(A.∪B.)=( ) A.{1,2,4}B.{1,2,4,5} {2,4} {5}
{3} {2,5} {1,4,6} {2,3,5}
{1} {3,5} {1,2,4,6} {1,2,3,4,5}
{1,2,3,6} {1} {1,2} {1,3,4,5}
{1} {3,5} {1,2,4,6} {1,2,3,4,5}
{1,3,5,6,7,8} {2,4,5,6,7,8} {5,6,7,8} {1,2,3,4}
={1,3,7}, ={x|x=log2(a+1),a∈A.},则(∁U.A.)∩( (∁U.B.)=( ) A.{1,3}B.{5,6} {4,5,6} {4,5,6,7}
{1,2} {5} {1,2,3} {3,4,6}