众所周知,排列组合应用题是高中数学的难点内容之一;许多中学数学报刊都曾介绍过一些求解排列组合应用题的方法和技巧,但要使学生能较熟练地运用这些方法和技巧解决实际问题,也不是一件容易的事,因为这里还涉及到各种方法和技巧的掌握及选择的问题。为使学生便于记忆、贮存、提取、应用,笔者把求解排列组合应用题的方法和技巧等总结为“八字诀”——“分、特、反、等、化、捆、插、推”。现介绍如下: It is well-known that arranging combinatorial applications is one of the most difficult aspects of high school mathematics. Many high school mathematics newspapers have introduced some methods and techniques to solve problems in arranging combinatorial applications. However, students should be able to use these methods and techniques to solve practical problems , Is not an easy task, because it also involves a variety of methods and techniques to master and choose the problem. In order to make the students easy to remember, store, extract and apply, the author sums up the methods and techniques of solving the combined application questions, Push". Now introduced as follows: