概率问题题型较多,解法灵活,不少同学在解题过程中因概念不清、忽视条件、考虑不周等原因导致解题错误.本文就概率问题中的易错题进行分类解析.类型一:“非等可能”与“等可能”的混淆 There are many problems of probabilistic problems and flexible solutions, and many of them cause errors in solving problems because of unclear concepts, ignorance of conditions and poor consideration.This paper classifies and analyzes the error-prone problems in probabilistic problems. A: “not possible ” and “may ” confusion