一唯隨機漫步 - 拼圖
By Sandy
at 2016-08-20T07:11
at 2016-08-20T07:11
Table of Contents
從原點出發,在一直線上走20步,每一步可以往右或往左一單位。
已知最後一次經過原點是第12步時,請問共有幾種走法可能?
________________________________________
原點
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已知最後一次經過原點是第12步時,請問共有幾種走法可能?
________________________________________
原點
--
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拼圖
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