设事件A,B满足P(A)=0.4,P(B)=0.3,P(B|A)=0.5,则P(A+B)=_____.
设事件A,B满足P(A)=0.4,P(B)=0.3,P(B|A)=0.5,则P(A+B)=_____.
【正确答案】:0.5
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