Puzzleup 2014 (3) Repeated Digits - 拼圖
By Dorothy
at 2014-08-14T00:01
at 2014-08-14T00:01
Table of Contents
題目網址: http://www.puzzleup.com/2014/
http://www.puzzleup.com/2014/puzzle/?244
答題時限: 8月14日7PM-比賽結束(約12月17日)
加分時限: 8月14日7PM-8月20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)
◆Repeated Digits
How many different positive integers can you make using one digit three
times, two digits twice and three digits once?
Note: Zero can not be the leftmost digit.
Example: 4535225408, and 2177701068 are such numbers.
使用一個數字三次,兩個數字兩次,三個數字一次,可以組合出多少正整數?
註: 零不能當最左邊的位數。
例: 4535225408、2177701068 皆是此種數之一例。
--
有人喜歡邊玩遊戲邊上逼;
也有人喜歡邊聽歌邊打字。
但是,我有個請求,
選字的時候請專心好嗎?
-- 改編自「古 火田 任三郎」之開場白
--
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拼圖
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