方法,
让后50报前50帽子的颜色 (或是让奇数报偶数帽子的颜色,一个道理),后50就靠1/2的概率了。
方法,
让后50报前50帽子的颜色 (或是让奇数报偶数帽子的颜色,一个道理),后50就靠1/2的概率了。
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