来自凌飞龙的问题
设A={2,4,6,8},B={1,2,3,4},则A-B=()
设A={2,4,6,8},B={1,2,3,4},则A-B=()
1回答
2020-03-03 00:38
设A={2,4,6,8},B={1,2,3,4},则A-B=()
设A={2,4,6,8},B={1,2,3,4},则A-B=()
A-B的意义就是A发生而B不发生
此题答案为:
{6,8}