护士和护士的区别:Brain Teaser Howmanyducks?Towduck walkafteroneduck,Oneduckwalksinthemiddie,Howmanyducks are there?

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Brain Teaser How many ducks?Two ducks walk after one duck,One duck walks in the middie,How many ducks are there?

脑筋急转弯，有多少只鸭子？
两只鸭子走在一只鸭子的后面，一只鸭子走在中间，一共有多少只鸭子。

应该是3只。

3

3 ducks

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