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【每日一题】- 2019-08-21 - 桶中取黑白球 #132

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azl397985856 opened this issue Aug 21, 2019 · 3 comments
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【每日一题】- 2019-08-21 - 桶中取黑白球 #132

azl397985856 opened this issue Aug 21, 2019 · 3 comments
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azl397985856 commented Aug 21, 2019 •
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有一个桶，里面有白球，黑球各100个，你必须用以下规则将球取出来：

  1. 每次从桶里取两个球
  2. 如果两个球是相同的颜色，那么再放一个黑球
  3. 如果两个球是不同的颜色，那么再放一个白球。

问：最后一个球是黑球的概率是多少？

@azl397985856 azl397985856 added the Daily Question 每日一题 label Aug 21, 2019
@azl397985856 azl397985856 changed the title 【每日一题】- 2019-08-21 - 【每日一题】- 2019-08-21 - 桶中取黑白球 Aug 21, 2019
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认领

Repository owner deleted a comment from catbaron0 Sep 17, 2019
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认领

done

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