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2023-06-16 15:52:23 +08:00 · 2023-06-16 15:52:23 +08:00 · fb63765edc
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 						  algebra of events. ==The triple (Ω, F , P ) is a probability space
 						  or probability triple.==
 					- Properties of Probability
+						- $$P (∅) = 0.$$
+						- For every finite $$A1 , A2 , · · · , An$$,
+						  ![image.png](../assets/image_1686901672954_0.png)
+						- For every event A, $$P (A) = 1 − P (A)$$.
+						- If A ⊂ B, then P (B − A) = P (B) − P (A) and P (A) ⩽ P (B).
+						- ==For every two events A and B,==
+						  $$P (A ∪ B) = P (A) + P (B) − P (AB)$$
+						- ![image.png](../assets/image_1686901846112_0.png)
+					-
 			- LATER 学积分
 			  :LOGBOOK:
 			  CLOCK: [2023-06-03 Sat 17:05:07]--[2023-06-03 Sat 17:05:08] =>  00:00:01