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content/杂七杂八/数学/概率与统计 大逃杀笔记2.md
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+---
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+created: "2025-12-31"
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+updated: "2025-12-31"
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+## 基本
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+
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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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