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设P(A)=0.7,P(A-B)=0.3,则( )
分类:
概率论与数理统计(经管类)(04183)
发表:2024年09月12日 08时09分47秒
作者:
admin
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设P(A)=0.7,P(A-B)=0.3,则( )
【正确答案】:0.6
【题目解析】:
P(A-B)=P(A)-P(AB)=0.7-P(AB)=0.3,故P(AB)=0.4。
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