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⊆{1,2,3,4},则满足条件的集合A.的个数为( ) A.1 2 3 4
={1,3}, ={1,2,3,4},则A.∩B.=( ) A.{1,2}B.{1,4} {1} {1,3}
{1,2,3,4,6} {1,2,3,4,5} {1,2,5} {1,2}
{1,2} {1,2,3,4} {1,2,3} {1,2,4}
={1,2,3,4}, A.,且1∈(A.∩B.),4∉(A.∩B.),则满足上述条件的集合B.的个数是( ) A.1B.2 4 8
={0,1,2,3}, ={1,2,4},则集合A.∪B.= ( ) A.{0, 1,2,3,4}B.{1,2,3,4} {1,2} {0}
={0,1,2,3}, ={1,2,4},则集合AB= ( ) A.{0,1,2,3,4}B.{1,2,3,4} {1,2} {0}
{1} {1,2} {1,2,3} {1,2,3,4}
={1,2,3,4}, ={x∈N||x|≤2},则A.∩B=( ) A.{1,2,3,4}B.{﹣2,﹣1,0,1,2,3,4} {1,2} {2,3,4}
={1,2}, ={2,3,4},那么集合A.∩B.等于( ) A.{2}B.{2,3} {1,2,3} {1,2,3,4}
={1,2},则满足的集合 的个数是A.1 B.3 4 8
满足{1,2}A{1,2,3,4},则集合A.的个数为( ) A.8 2 3 4
={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}
={0,1,2,3},B={1,2,4},则集合A.∪ = A.{0,1,2,3,4} B.{1,2,3,4} {1,2} {0}
={1,2,3,4,5}, ={x|x<2},则A.∩B.等于( ) A.{1}B.{1,2} {1,2,3} {1,2,3,4}
={1,2}, ={2,4},则∁U.(A.∪B.)=( ) A.{2}B.{3} {1,2,4} {1,4}
满足条件{1,2}ÍA{1,2,3,4,5},则集合A.的个数有 ( ) A.8 7 4 3