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学习排列组合知识的难点是如何做到不重不漏,找好问题的切入点,建立合理的数学模型.本文就这个问题以今年的高考试题为例,分析各种排列
The difficulty in learning to arrange the combination of knowledge is how to do it, to find the starting point for a good problem, and to establish a reasonable mathematical model. This article will take this year’s exam questions as an example to analyze the various arrangements.