不少排列组合应用题,用常规方法求解, 不但过程繁琐且极易出错.为此,本文列举几例介绍一些非常规方法,供大家参考. 一、合理转化有些排列组合应用题比较抽象,难以找到解题的突破口,这时,可将其转化为等价的问题,有可能化难为易. A lot of permutations and combinations of problems, using conventional methods to solve, not only cumbersome and highly error-prone. For this reason, this article lists a few examples of some unconventional methods, for your reference. First, the rational transformation of some permutations and combinations of applications more abstract, difficult Find a breakthrough point for problem solving. At this time, you can turn it into an equivalent problem. It may be difficult to make it easier.