PuzzleUp 2009 (6) 6-Letter Code - 拼圖

By Barb Cronin
at 2009-08-26T19:20
at 2009-08-26T19:20
Table of Contents
首頁:http://www.puzzleup.com/2009/?home
時限:2009/08/27(四)19:00~09/02(三)18:59
答案可上傳5次,但每改1次扣20分(基本分為100分)
在比賽期間內可隨時回答,但只有在時限內回答者有額外加分
◆6-Letter Code
用26個英文字母,組成6個字元的字碼。每個字碼裡不得出現相同的字母,且任意兩個在
26個英文字母當中的順序(也就是英文字母歌裡的順序)相鄰的字母,也不會出現在同一
個字碼裡。
請問你總共能組成多少字碼?
如果題目要求用最前面的4個字母(ABCD),組成2個字元的字碼,那麼答案將會是
6個(AC、CA、AD、DA、BD、DB)。
--
時限:2009/08/27(四)19:00~09/02(三)18:59
答案可上傳5次,但每改1次扣20分(基本分為100分)
在比賽期間內可隨時回答,但只有在時限內回答者有額外加分
◆6-Letter Code
用26個英文字母,組成6個字元的字碼。每個字碼裡不得出現相同的字母,且任意兩個在
26個英文字母當中的順序(也就是英文字母歌裡的順序)相鄰的字母,也不會出現在同一
個字碼裡。
請問你總共能組成多少字碼?
如果題目要求用最前面的4個字母(ABCD),組成2個字元的字碼,那麼答案將會是
6個(AC、CA、AD、DA、BD、DB)。
--
Tags:
拼圖
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