概率解题中容易混淆的概念与出错的问题很多,有的概率计算相当困难而又富有技巧,为帮助高二同学的概率学习与高三同学复习好概率知识,本文对概率解题中最常见错误而又容易混淆的问题进行剖析,希望能对同学们有所帮助.1计算m时,混淆A是I的子集与不是I的子集出错例1某人有五把钥 There are many confusing concepts and problems in the probabilistic problem solving. Some probability calculations are very difficult and skillful. To help the students in Grade 2 proficiency learning and Grade 3 students to review probabilistic knowledge, this paper deals with the most common mistakes in probabilistic problem solving. It is easy to confuse the problem and analyze it, hoping to help the students. 1 When calculating m, confusion A is a subset of I and I is not a subset of errors. Example 1 Someone has five keys