![](https://i.imgur.com/QA96ctB.jpg)
[中學] 機率問題
![](https://i.imgur.com/QA96ctB.jpg)
求救 怎麼算都是75%
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05/30 22:02, , 1F
05/30 22:02, 1F
推
05/30 23:17, , 2F
05/30 23:17, 2F
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05/30 23:18, , 3F
05/30 23:18, 3F
![](https://i.imgur.com/KI8YlWx.jpg)
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