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)
答
{3,5,7}.