繩梯的長度 - 拼圖
By Regina
at 2007-12-11T16:29
at 2007-12-11T16:29
Table of Contents
由船上垂下一條繩梯,從最上面數來第九階的地方剛好碰到水面,如果以一小時四十公分
的速度開始漲潮,兩小時後,水會浸到繩梯的哪一階?已知繩梯每一階彼此的間隔是三十
公分。
puzzlez
2007/12/11
--
的速度開始漲潮,兩小時後,水會浸到繩梯的哪一階?已知繩梯每一階彼此的間隔是三十
公分。
puzzlez
2007/12/11
--
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