概率能够充分体现现代数学思想,并与生产、生活实际联系紧密,已成为高考的重点和热点之一,其考题往往以实际应用问题为背景,以四种典型概率的计算为核心.其中相互独立事件同时发生的概率、n次独立重复试验中恰好发生k次的概率最为普遍.解决这些问题关键是根据其概念分清事件的类型,再选择相应的概率公式进行计算. Probability can fully embody the modern mathematics thought and have close connection with production and life, which has become one of the focuses and hot spots in college entrance examination. The examination questions often take the practical application as the background and the four typical probabilities as the core. The probabilities of simultaneous occurrence of events and occurrence of k times in n independent repeated trials are the most common, and the key to solving these problems is to distinguish the types of events according to their concepts and then select the corresponding probability formula.