Puzzleup 2012 (5) Sum of the Squares - 拼圖
By Irma
at 2012-08-22T20:08
at 2012-08-22T20:08
Table of Contents
題目網址: http://www.puzzleup.com/2012/?home
答題時限: 8月23日7PM-比賽結束(約12月12日)
加分時限: 8月23日7PM-8月28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。
另有兩種加分: 1. 加分時限內答對。例:第N天答對,可加(6-N)分。
2. 題目越困難,加分越多。例:這題有n%的人答錯,答對者加n分。
◆ Sum of the Squares
If you add the squares of all the numbers between 222,222,222 and 999,999,999
(inclusive) what will be the rightmost digit of the result?
If the problem was asked for the numbers between 2 and 9, the answer would be 4.
如果把 222,222,222 到 999,999,999(含)之間所有數的平方相加起來,
最右邊的數為何?
若題目問的是 2 到 9,那麼答案會是4。
--
進補題
--
答題時限: 8月23日7PM-比賽結束(約12月12日)
加分時限: 8月23日7PM-8月28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。
另有兩種加分: 1. 加分時限內答對。例:第N天答對,可加(6-N)分。
2. 題目越困難,加分越多。例:這題有n%的人答錯,答對者加n分。
◆ Sum of the Squares
If you add the squares of all the numbers between 222,222,222 and 999,999,999
(inclusive) what will be the rightmost digit of the result?
If the problem was asked for the numbers between 2 and 9, the answer would be 4.
如果把 222,222,222 到 999,999,999(含)之間所有數的平方相加起來,
最右邊的數為何?
若題目問的是 2 到 9,那麼答案會是4。
--
進補題
--
Tags:
拼圖
All Comments
By John
at 2012-08-26T17:55
at 2012-08-26T17:55
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at 2012-08-28T19:21
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at 2012-09-09T13:50
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at 2012-09-13T04:18
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