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假如每3个空啤酒瓶可以换一瓶啤酒,某人买了10瓶啤酒,那么他最多可以喝到多少瓶啤酒?

15瓶
先来10瓶 就有10个盖子
然后来3瓶 有4个盖子
再来1瓶 有2个盖子
最后借个盖子来1瓶 还一个盖子
15~~~

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