作者LPH66 (かつて交わした約束)
看板puzzle
標題[中譯] Puzzleup 2017 (15) 10-Digit Number
時間Thu Nov 16 10:59:12 2017
題目網址:
http://www.puzzleup.com/2017/
http://www.puzzleup.com/2017/puzzle/?15
答題時限: 11月16日7PM-比賽結束(約12月27日)
加分時限: 11月16日7PM-11月21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)
◆10-DIGIT NUMBER
A 10-digit number has distinct digits. Using all of its digits, two new
numbers are created. The sum of these two numbers is 99999 and their
multiplication is the same 10-digit number. Find this 10-digit number.
一個十位數的各位數都不同。使用這些數字形成兩個新數。
這兩個數的和是 99999,其積則是原來的十位數。
求此十位數。
--
'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
--
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※ 編輯: LPH66 (140.112.30.32), 11/16/2017 11:12:09
→ buffalobill: program up時間又到了 11/16 12:07
推 weselyong: 從沒(不用電腦)解開過Orz 11/24 00:54
推 CaTom: 手解我只能解到1,4,7三個數字是同一組而已... 11/24 15:52