古典概型和几何概型都是一种特殊的随机事件概率模型,是高考常考的知识点.试题往往立足于课本,与实际生活相结合,考查学生解决实际问题的能力.在全国各省的高考卷中,几何概型常以填空题或选择题的形式出现;古典概型常以解答题的形式出现,理科绝大多数与排列组合、分布列、期望、方差等一起考查.重点难点重点:明确古典概型的等可能性和有限性;明确几何概型的等可能性和无限性.重点是会灵活应用古典概型和几何概型的概率计算公 Classical outlines and geometric outlines are special kinds of stochastic event probability models, and they are knowledge points for regular entrance exams. Questions are often based on textbooks and combined with practical life to examine students’ ability to solve practical problems. In the college entrance examination volume, geometric outlines often appear in the form of blank-filling questions or multiple-choice questions; classical models often appear in the form of answer questions, and the vast majority of sciences are examined together with permutations, distribution columns, expectations, and variances. : Equivalent possibilities and finiteness of the classical model; the possibility and infinity of the explicit geometric model. The emphasis is on the probabilistic calculation of the probability of the classical application of classical models and geometric models.