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{5,7} {2,4} {2,4,8} {1,3,5,6,7}
{1,3} {3,5} {1,3,5} {1,3,5,7}
{5} {0,3} {0,2,3,5} {0,1,3,4,5}
{3,5} {5,7} {3,7} N={1,3,5,7}
{5,7} {2,4} {2,4,8} {1,3,5,6,7}
{5,7} {2,4} {1,3,5,6,7} {1,3,4,6}
={(x,y)|2x-y+m>0}, ={(x,y)|x+y-n≤0},若点P.(2,3)∈A.∩(∁UB),则下列选项正确的是( ) A.m>-1,n<5 B.m<-1,n<5 m>-1,n>5 m<-1,n>5
{4} {2,3,4,5} {1,3,4,5} ∅
={2,4,5},则∁U.A.=( ) A.∅ {1,3,5} {1,3,6,7} {1,3,5,7}