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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Three utilities problem ： ウィキペディア英語版 Three utilities problem The classical mathematical puzzle known as the three utilities problem; the three cottages problem or sometimes water, gas and electricity can be stated as follows: The problem is an abstract mathematical puzzle which imposes constraints that would not exist in a practical engineering situation. ==History== Henry Dudeney states that the problem is "as old as the hills...much older than electric lighting, or even gas"; a review of the problem's history is given by Kullman who states that most published references to the problem characterize it as "very ancient". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Three utilities problem」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.