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排列组合问题是高中乃至以后数学学习的重要内容,因其解法多变,所以成为很多同学望而却步的难题。在这种情况下,探索解决这一问题的方法具有十分重要的意义。一、排列和组合的基本概念什么是排列呢?排列是按照一定顺序排成的一列元素,两个排列的不同,意味着两个排列的元素不同或元素相同但元素的排列不同。而什么是组合呢?组合是无顺序约束的一组元素,两个组合的不同,意味着当且仅当两个组合元素的不同。
Arranging combinatorial problems is an important part of high school mathematics learning and even afterwards. Due to the changeable solution, many students have become prohibitive. Under such circumstances, it is of great significance to explore ways to solve this problem. First, the basic concepts of permutation and combination What is permutation? Permutation is a sequence of elements arranged in a certain order. The difference between the two permutations means that the two elements are different or the elements are the same but the elements are arranged differently. What is a combination? Combination is a group of elements without order constraints, the difference between the two combinations, if and only if the two combinations of different elements.