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“概率初步”是初中数学新增的内容,考试大纲要求学生必须掌握等可能性事件概率的计算.初中数学中等可能性事件概率的计算通常可分为三种类型: 一、从一堆“球”中任取满足条件的一个“球”
“Preliminary probability” is a new addition to junior high school mathematics. The examination outline requires students to master the probability of such probability events. The probability of middle probability events in mathematics is usually divided into three types: First, from a pile of “balls” “Any ball” that meets the conditions