【摘要】 用相异元素的可重复排列的思想与公式统一解释和解决了通常意义下的排列组合及各种类型的可重复排列与组合问题,推出了它们的全部结果与公式,进而提出了排列与组合可以相互转化的结论.更多还原

【Abstract】 Using the thought and a formula of permutation with repetition,this paper uniformly reinterprets and resolves traditional permutation and combination problems,explains various permutations and combinations with repetition,obtains all of the related results and formulas.Based on the outcome above,the paper gains the conclusion that permutation and combination can transfer each other.更多还原