《大廈》

Photo by Mihail Ribkin on Unsplash

今天是要帶小提琴上班的日子,為了避開擠迫的繁忙時間,六時半出門。等了好一會電梯,發現一直停在8樓。

又壞了?唯有到下一層19樓搭電梯…

先講解一下我家大廈的電梯數量和樓層分佈。有三部電梯,每部都停地下,然後一部只停3n-2,一部只停3n-1,一部只停3n,n = 1 to 11。即如下:

左邊:G 1 4 7 10 13 16 19 22 25 28 31

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PhD | Research Psychologist | Psychometrician | Learning Support Assistant | IT Auditor/Consultant | ex-CISA/CISSP | Top Writer in Humor | Work in HK, UK, USA

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思然 oce

PhD | Research Psychologist | Psychometrician | Learning Support Assistant | IT Auditor/Consultant | ex-CISA/CISSP | Top Writer in Humor | Work in HK, UK, USA