p(A+B)=P(A)+P(B)能不能推出A,B两事件互斥呢？不懂的请别发言，

P(A+B)=P(A)+P(B) 只能表示A和B没有交集，他们可能是两个不相关的事件，不一定是互斥的~

公式：p(A+B)=P(A)+P(B) -P(AB)
p(A+B)=P(A)+P(B)

P(AB)=0
a且b发生的概率为0 能推出互斥

可以
p(A+B)=P(A)+P(B)可以得出：p(AB)=0，即A,B不能同时发生，互斥

能，p(A+B)=P(A)+P(B) 等价于A,B两事件互斥

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Vibram Five Fingers

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