[中譯] Puzzleup 2015 (15) Hands of a Clock

看板puzzle (益智遊戲 - 數獨,拼圖,推理,西洋棋)作者LPH66 (-6.2598534e+18f)時間10年前 (2015/11/05 00:15)推噓0(0推 0噓 0→)

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題目網址: http://www.puzzleup.com/2015/ http://www.puzzleup.com/2015/puzzle/?15 答題時限: 11月５日７ＰＭ－比賽結束（約12月16日）加分時限: 11月５日７ＰＭ－11月11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）　　 ◆HANDS OF A CLOCK How many times at least two of the three hands (hour, minute, second) of a clock exactly overlap between 10:30 and 22:30? Note: All hands move in a continuous motion with no discrete jumps. 在早上十點半與晚上十點半之間，鐘面上的時分秒三根針有至少兩根針完全重合的次數有多少？注意: 三根針都以連續方式前進，沒有不連續的跳動。 -- 'You've sort of made up for it tonight,' said Harry. 'Getting the sword. Finishing the Horcrux. Saving my life.' 'That makes me sound a lot cooler then I was,' Ron mumbled. 'Stuff like that always sounds cooler then it really was,' said Harry. 'I've been trying to tell you that for years.' -- Harry Potter and the Deathly Hollows, P.308 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 123.195.39.85 ※ 文章網址: https://www.ptt.cc/bbs/puzzle/M.1446653724.A.BD0.html ※ 編輯: LPH66 (123.195.39.85), 11/05/2015 00:15:50