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概率公式是《概率》这一章的一条主线,公式多,不好理解,容易产生困惑,尤以互斥事件有一个发生概率公式和相互独立事件同时发生概率公式容易产生误解。
Probability formula is one of the main lines of “Probability”. It has many formulas and is not easy to understand. It is easy to be confused. Especially, there is a misunderstanding about the probability formula of probability of occurrence and the probability formula of mutually independent events in mutually exclusive events.