Great, we want to a unique answer,have to say D=5 or D=4,...But

來源: jinjing 於 2011-01-07 12:46:27 [] [舊帖] [給我悄悄話] 閱讀數 : (117 bytes)
回答: D is not 5. Then this might be the abswer: 由 calligraphy 於 2011-01-07 12:05:30

We don't need say D= 5 ... and say,ROBERT is Max (or Min),The answer certainly is unique and more interesting.

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