概率是现行高中数学课本中的新增知识,目前在很多高考参考资料中都出现了概率方面的练习题,其中有关概率相乘的一类问题的解题过程值得我们商榷.先来看这样一道习题:从10位同学(其中6女,4男)中随机选出1位参加测验.女同学能通过测验的概率为4/5,男同学能通过测验的概率为3/5.试求:随机选出1位同学能通过测验的概率.大多数人对这道题的解答是,随机选出1 Probability is the new knowledge in the current high school mathematics textbooks. At present, there are probabilistic exercises in many reference materials for the college entrance examination. The question-solving process for a class of problems involving probabilistic multiplication is worth our discussion. Exercises: From the 10 students (6 females, 4 males), randomly select 1 candidate to take the test. The probability of the female student passing the test is 4/5, and the probability of the male student passing the test is 3/5. Randomly choose the probability that a classmate can pass the test. Most people answer this question by randomly choosing 1