题目

Finding The Solution
Do you like puzzles?Euler did.Did you solve the one you heard for the listening task?No!Well,do not worry,Euler did not either!As he loved mathematical puzzles,he wanted to know why this one would not work.So he walked around the town and over the bridges of Konigsberg several times.To his surprise,he found that he could cross six of the bridge without going over any of them twice or going back on himself(see Fig 3),but he could not cross all seven.He just had to know why.So he decided to look at the problem another way.
He drew himself a picture of the town and the seven bridges like the one above.He marked the land and the bridges.Then he put a dot or point into the centre of each of the areas of land.He joined these points together using curved lines going to them(A,B and C) and one had five(D).He wondered if this was importand and why the puzzle would not work.As three and five are odd numbers he called them "odd" points.To make the puzzle clearer he t

提问时间：2020-11-20

答案

找到解决问题的方法你喜欢难题呢?欧拉所做的.你解决你听到的任务吗?听不!哦,别担心,欧拉没有!因为他热爱数学难题,他想知道为什么这一不工作所以他走在城里,在桥梁的Konigsberg好几次了.但是令他吃惊的是,他发现他能...