概率是中学数学的重要知识点,也是各地高考的考点,同时更是学生的易错点.为了减少学生求解此类问题的出错率,提高解题技能与技巧,下面就学生容易出现的典型错解举例剖析,希望能够引起教师和学生的高度注意.1将“非等可能”与“等可能”混同致错例1将一枚硬币连掷三次,出现“2个正面1个反面”的概率是多少? Probability is an important knowledge of high school mathematics, college entrance examination is also around the test center, but also more students wrong point.In order to reduce the error rate of students to solve such problems and improve the problem-solving skills and skills, the following students prone to typical fault Solution example analysis, hoping to attract high attention of teachers and students.1 The “is not possible ” and “Like ” and other possible “cause wrong Example 1 coin a coin three times, ” 2 front 1 A negative "What is the probability?