(A - B) ∩ (A - C) = A - (B ∪ C)
A ∪ B - B = A - B
(A ∪ B) - C = A ∪ (B - C)
(A - B) ∪ B = A
这道题你会答吗?花几分钟告诉大家答案吧!
扫描二维码,关注牛客网
下载牛客APP,随时随地刷题