OG11th Math
4.1 Arithmetic
11. Discrete Probability最后出现的例子:
P(A or B)=P(A)+P(B)——since A and B are mutually exclusive
P(B or C)=P(B)+P(C)-P(B)P(C)——by independence
Mutually exclusive和independence不是一个意思吗?
Mutually exclusive是互斥的
independence是互相独立的,独立不一定没有交集
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