虽在近几年的高考中,题目的重点基本都放在两个计数原理的考察上,学生们对于问题的类型把握很精准,解答问题的准确性和速度上都有很大的提高。高中数学排列组合问题一直以来都是高中数学教学的难点,排列组合的思考方式比较独特,解题的思路也需灵活,所以在解题中较为容易出现遗漏的错误。 Although the college entrance examination in recent years, the focus of the questions are basically on the basis of the two count the study, the students grasp the type of the problem is very accurate, the accuracy and speed of the answer to the questions have greatly improved. High school mathematics permutations and combinations have always been the difficulty of high school mathematics teaching, permutation and combination of thinking is more unique, problem-solving ideas also need to be flexible, so the problem-solving is more prone to omission mistakes.