Question

一道数学交集与集合的题 P=2.3.4.5 Q=5.6.7.8求P∩Q=?PVQ=?

Answer 1

P∩Q={2,3,4,5}∩{5,6,7,8}={5}

PVQ={2,3,4,5}V{5,6,7,8}={2,3,4,5,6,7,8}