| 谢谢车五进一。题目译文中漏了几个字。原文是： |
| 送交者: gugeren 2020月03月21日12:08:34 于 [灵机一动] 发送悄悄话 |
| 回 答: 等差数列公差可以为 0 由 车五进二 于 2020-03-20 21:30:31 |
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Three fair dice are tossed at random (i.e., all faces have the same probability of coming up). What is the probability that the three numbers turned up can be arranged to form an arithmetic progression with common difference one? 所以公差不为0。 最近思想不集中了。 |
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