三个三位数相乘,积怎样最大

  • 时间:2020-04-03 19:10:37
  • 分类:数学世界
  • 阅读:125 次

用1——9这九个数字组成三个三位数,每个数字只用一次,使这三个三位数相乘的积尽可能大,这三个三位数各应是多少?

解题思路:要想使这三个三位数的乘积尽可能大,必须每个三位数尽量大;要使每个三位数尽量大,必须把大的数字尽可能放在高位上。与此同时,根据《乘积最大问题》中证明的,还要兼顾到这三个数之间的差距要尽可能的小。

解答过程:

把9、8、7三个数字放在三个三位数的百位上,十位上放4、5、6三个数字,个位上放1、2、3三个数字。组合出来就是:941,852,763。

推荐阅读:
Single-Row Keyboard Algorithms to Estimate the Finger Moving Tim  Bruteforce Algorithm to Find the Next Closet Time Reusing the Cu  The Overlapping Rectangles using CSS and Javascript  How to Count the Distinct Pairs using HashMap?  Blogger Jailed For Pokemon Go Gets Even More Trouble  Dead Simple Ways to Keep Your Best Blogging Ideas From Slipping   The Fear of Blogging is Real – Here’s How to Overcome It  Influential Cybersecurity Blogger Gets Digitally Attacked  Building Relationships with Your Influencers  Authorities In Vietnam Arrest Top Blogger For One Criticizing Co 
评论列表
添加评论