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={1,3},则 A. {1,3} {2,4,5} {1,2,3,4,5}
{3} {4,5} {4,5,6} {0,1,2}
={1,4,5,8}, ={2,6},则集合(∁UA.)∪B=( ) A.{1,2,5,8}B.{0,3,6} {0,2,3,6} ∅
{3} {4,5} {3,4,5} {1,2,4,5}
={1,3}, ={3,5},则∁U.(A.∪B.)等于( ) A.{1,4}B.{2,4} {2,5} {1,5}
∅ {1,3} {2,4,5} {1,2,3,4,5}
)∪B=( ) A.{2} {1,2,3} {1,3} {0,1,2,3,4}
={0,1,2,3}, ={3,4,5},则(∁U.A.)∩B.等于 A..B.
={﹣1,0,2,4},则∁U.A.=() A. φ {0,2,4} {1,3} {﹣1,1,3}
∪ =( ) A.{2} B.{1,2,3} {0,1,3,4} {0,1,2,3,4}
={1,3}, ={3,5},则CU(A.∪B.)等于( ). A.{1,4} B.{1,5} {2,5} {2,4}
={x|x2−4x+3=0}, ={y|y=−x2+2x+2,x∈R.},全集U.=R.,则A.∩(∁U.B.)=( ) A.Æ B.[1,3] {3} {1,3}
int a[]=('0','1','2','3','4','5','6'); int a[10]=0,1,2,3,4,5,6; char a[5]="hello"; char a[5]='h','e','1','1','o';
{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}
∅ {1,3} {2,4,5} {1,2,3,4,5}