排列组合综合应用问题是高考的热点问题,同时也是概率问题的基础,每年全国各地的高考试卷都有排列组合综合应用题或以排列组合综合应用题为基础的概率问题,是高考的热点.这类题联系实际、生动有趣,但题型多样、思路灵活、方法新颖、概 The problem of permutation and combination of comprehensive applications is a hot issue of the college entrance examination, and it is also the basis of probabilistic problems. Each year, high test papers in all parts of the country have a series of comprehensive application questions or probabilistic questions based on a combination of comprehensive application questions. This is a hot spot of the college entrance examination. The topics are practical, lively and interesting, but they have diverse questions, flexible ideas, and novel methods.