Puzzleup 2013 (19) Picked Number - 拼圖

Margaret avatar
By Margaret
at 2013-11-27T21:50

Table of Contents


題目網址: http://www.puzzleup.com/2013/
http://www.puzzleup.com/2013/puzzle/?260

答題時限: 11月28日7PM-比賽結束(約12月11日)
加分時限: 11月28日7PM-12月2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)  

◆Picked Number

A number is picked, and five guesses are made to find this number. The
guesses are written on a paper, and the differences between the guesses and
the picked number (by subtracting the smaller from the bigger) are written on
another paper. Later one number is randomly erased from each paper. As a
result there are 4 numbers on each paper.

Guesses: 27, 32, 44, 45
Differences: 5, 7, 10, 13

If the picked number can be found using these information, what is this
number?

有一個數被選取,然後做了五次對這個數的猜測。
這五個猜測一起寫在一張紙上,
然後在另一張紙上寫下這五個猜測跟被選數之間的差 (固定由大減去小)。
然後兩張紙各任意地抹去了一個數。
於是這兩張紙上各剩下了四個數字,如下:

猜測: 27, 32, 44, 45
差距: 5, 7, 10, 13

由這些資訊試求被選數。

--
'Oh, Harry, don't you see?' Hermione breathed. 'If she could have done
one thing to make absolutely sure that every single person in this school
will read your interview, it was banning it!'
---'Harry Potter and the order of the phoenix', P513

--
Tags: 拼圖

All Comments

Olga avatar
By Olga
at 2013-11-28T04:02
已經不是數學問題而是利用數學知識的推理題了 XD
Hedda avatar
By Hedda
at 2013-11-29T23:36
這題也格外簡單
Emma avatar
By Emma
at 2013-12-03T14:12
如果是二維三維 題目可以設計得有趣些

ProjectEuler 448 Average least common

Isabella avatar
By Isabella
at 2013-11-26T00:46
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整排的拼圖陷阱...

Yuri avatar
By Yuri
at 2013-11-24T21:23
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Olga avatar
By Olga
at 2013-11-21T19:04
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Puzzleup 2013 (18) Three Prime Numbers

Agatha avatar
By Agatha
at 2013-11-21T00:33
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ProjectEuler 445~447 Retraction

Ida avatar
By Ida
at 2013-11-17T06:20
445~447. Retraction http://projecteuler.net/problem=445 http://projecteuler.net/problem=446 http://projecteuler.net/problem=447 對整數 n andgt; 1, 定義一族函數 f ...