Question

（求步骤）已知集合A={0,1,2,3,4,5},B={1,3,6,9},C={3,7,8},则（A∩B）∪C等于

Answer 1

因为A∩B={0,1,2,3,4,5}∩{1,3,6,9}={1,3}

所以（A∩B）∪C={1,3}∪{3,7,8}={1,3,7,8}