【8.设 U={x|0< x≤10, x∈N},A={1,2,4,5,9},B={4,6,7,8,10】8 。设 U={x|0< x≤10,x∈N},A={1,2,4,5,9},B={4,6,7,8,10},C={3,5,7},求 A∩B,A∪B,(CUA )
【8.设 U={x|0< x≤10, x∈N},A={1,2,4,5,9},B={4,6,7,8,10】8 。设 U={x|0< x≤10,x∈N},A={1,2,4,5,9},B={4,6,7,8,10},C={3,5,7},求 A∩B,A∪B,(CUA )