Puzzleup 2013 (15) Digits - 拼圖
By Heather
at 2013-10-30T23:32
at 2013-10-30T23:32
Table of Contents
題目網址: http://www.puzzleup.com/2013/
http://www.puzzleup.com/2013/puzzle/?256
答題時限: 10月31日7PM-比賽結束(約12月11日)
加分時限: 10月31日7PM-11月4日6:59PM
答對可得基本分100分。答案可上傳5次,每改1次答案從基本分扣20分。
比賽期間內可隨時上傳答案,加分時限內答對第n天加(6-n)分
另依題目的難易有額外加分(如有80%的人這題答錯,答對者加80分)
◆Digits
A number has different digits, and the digits of the sum of each neighboring
two digits are not used in this number.
What is the largest number satisfying these conditions?
Example:
7692
7+6=13, 6+9=15, 9+2=11 (The digits 1, 3 and 5 are not used.)
一個數的各位數皆不同,且相鄰兩位數的和所用的數位都不在此數當中。
問此數最大多少?
例: 7692 - 7+6=13, 6+9=15, 9+2=11, 而 7692 中並無 1 3 5。
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All Comments
By Queena
at 2013-11-02T04:24
at 2013-11-02T04:24
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at 2013-11-04T01:28
at 2013-11-04T01:28
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at 2013-11-05T08:42
at 2013-11-05T08:42
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