设全集U={x│x∈N*,x≤a},集合P={1,2,3},Q={4,5,6},则"a∈[6,7)"是“Cu（P）=Q”的──── 条件.

设全集U=R,集合A=x|x 设全集U=R,集合A={X|X 设全集U=R,集合A={X//X/ 设全集U=R,集合A={X|X 设全集U=R,集合A={x∈R|-1≤x 设全集U={x∈N+ 丨x≤8}若A∩(CuB)={1.8},( CuA)U(CuB)={4,7}求集合A,B. 设全集U=R,集合A={x|-5 设全集U=R,集合A={x|-5 设全集U=R,集合A={X|-1 设全集U=R,集合A={x|0 设全集U=R,集合A={x|-1 设全集U=R,集合A=｛x|-5 设全集U=R,集合A={x/1 设全集U=R 集合A=｛x/-4 设全集U=R,集合A=(x|-1 设全集U=R,集合A={X|-3 设全集U=R,集合A={x|0 设全集U=R,集合A=(x|-5