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本文提出用集合的观点理解排列和组合的概念,运用集合的有关定理解答排列组合习题的方法,可供教师在辅导数学基础较好的学生时作参考。
This paper proposes to use the set of perspectives to understand the concept of permutation and composition, and to use the relevant theorems of the set to solve the method of permuting the combined exercises. This can be used as a reference for teachers when they are tutoring students with a good mathematical foundation.