I={1,2,3,4,5,6,7,8,9}A≦I,B≦I,A∩B={2},(CuA)∩(CuB)={1,9},CuA∩B={4,6,8}求A∩(CuB)

问题描述:

I={1,2,3,4,5,6,7,8,9}A≦I,B≦I,A∩B={2},(CuA)∩(CuB)={1,9},CuA∩B={4,6,8}求A∩(CuB)

{3,5,7}.