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设P(A)=1/3,P(A∪B)=1/2,且A与B互不相容,则P(B)=____.
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概率论与数理统计(经管类)(04183)
发表:2024年09月12日 09时09分02秒
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admin
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设P(A)=1/3,P(A∪B)=1/2,且A与B互不相容,则P(B)=____.
【正确答案】:1/6。解析:由p(A∪B)=p(A)+p(B)=1/2,得p(B)=1/6.
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