古典概型是一种最基本的概率模型,也是学习其他概型的基础,我们不妨剖析古典概型中的常见错误.易错点一:“有序”与“无序”混同,导致基本事件的个数求错例1从10件产品(其中3件次品)中,一件一件地不放回任意取4件,求4件中恰有1件次品的概率.错解因为第一次有10种取法,第二 Classical Probability is the most basic probabilistic model and the basis for studying other Probable Models. We may wish to analyze the common mistakes in Classical Probability. One error prone point: “Ordered ” and “Disorder ” Mixed , The number of basic events led to the wrong example 1 from 10 products (including 3 defective), one by one without taking back any 4, find the right one in 4 probability of defective. The wrong solution because the first time there are 10 ways to take the second