作者nice11 (坚强)
看板teaching
标题[问题] 中学 资优生 逻辑推理
时间Sat Apr 8 22:09:14 2006
请问下列两个逻辑问题的翻译及解答(哪一个才成立?)
谢谢
Compare the following arguments:
1. All squares are polygons.
All triangles are polygons.
Therefore, some triangles are squares.
2. All polygons have sides.
All squares are polygons.
Therefore, all squares have sides.
谢谢
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