概率是高中数学新增的内容.由于它在理论与实际中都有很重要的意义.因此已成为近年高考命题的一个热点.下面介绍几例出现在各地模拟试题中用递推思想方法探求概率的问题,不仅体现数列与概率知识的交汇性,而且有利于培养同学们的解题能力和创新能力. Probability is a new addition to high school mathematics. Because it has important implications both in theory and in practice, it has become a hot spot for recent college entrance examination propositions. Here are a few examples of how to use the recursive thought method to explore probabilities in simulation test questions. The problems not only reflect the convergence of the series and probabilistic knowledge, but also help cultivate the problem-solving abilities and innovative abilities of the students.