
P(A or B) = P(A) + P(B) - P(A and B)
文氏图
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
|
''' +-----------------------------------------+ | | | /---------------- | | | | | | | A | | | | /-------------------- | | | | A | | | | | | and | B | | | | | B | | | | | | | | | | ----------|-----/ | | | | | | | | | | | --------------------/ | | | +-----------------------------------------+
'''
|
近期评论