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《中小学数学》初中版2008年1-2期上刊登了朱绍志的《概率是23,还是21》(以下简称“朱文”),朱文中求得的概率P(小明先上场)=21是错误的,我们认为正确的结果应是P(小明先上场)=32,不是21.
The “Probability is 23 or 21” (hereinafter referred to as “Zhu Wen”) of Zhu Shaozhi was published in the “Primary and Secondary Mathematics” junior middle school edition in the 2008 issue 1-2. Zhu Wenzhong’s probability P (Xiao Ming first played) = 21 It is wrong. We think the correct result should be P (Xiao Ming first played) = 32, not 21.