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={x|x2﹣4x﹣5<0}, ={x|2<x<4},则A.∩B=( ) A.(1,3)B.(1,4) (2,3) (2,4)
={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}
={x|x≥3或x≤1}, ={x|x2﹣6x+8<0},则(∁R.A.)∩B.=( ) A.(1,3)B.(1,4) (2,3) (2,4)
{5,7} {2,4} {2,4,8} {1,3,5,6,7}
={﹣1,1,2,3,4}, ={﹣2,﹣1,0,1,2},则(∁U.A.)∩B.=( ) A.{3,4}B.{﹣2,3} {﹣2,4} {﹣2,0}
={1,2,4},集合 ={3,6},则∁U.(A.∪B.)=( ) A.{1,2,4}B.{1,2,4,5} {2,4} {5}
)(1,3) ( )(1,4) ( )(2,3) ( )(2,4)
={x|2={x|(x-1)(x-3)<0},则A.∩B.=( ) A.(1,3)B.(1,4) (2,3) (2,4)
={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}
={x∈N|0≤x≤5},∁A. ={1,3,5},则集合B.=( ) A.{2,4}B.{0,2,4} {0,1,3} {2,3,4}
={X|2={X|(X-1)(X-3)<0},则AB.= (A.)(1,3) (B.)(1,4) ( )(2,3) ( )(2,4)
{2,3} {2,4} {3,4} {2,3,4,5}