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---
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created: "2025-12-31"
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updated: "2025-12-31"
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---
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## 基本
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对立事件:$P(\bar{A})=1-P(A)$
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互斥事件:$P(AB)=0$
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德摩根律:$\bar{AB}=\bar{A}+\bar{B}$
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事件的差的公式:$P(A-B)=P(A \bar{B})=P(A)-P(AB)=P(A+B)-P(B)$
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