摘要:
E0052520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.What is the smallest number that is ... 阅读全文
摘要:
E004A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99.Find the l... 阅读全文
摘要:
E003The prime factors of 13195 are 5, 7, 13 and 29.What is the largest prime factor of the number 600851475143 ?求600851475143的最大质因子。今天重写了求素数的方法# -... 阅读全文
摘要:
E002Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: ... 阅读全文
摘要:
有个很有意思的网站 ProjectEuler.net ,提出了200多道数学问题,要求读者用计算机求解,不限制所用的计算机语言。(2008年11月)试着用Python做了几道,挺有意思的。 Add all the natural numbers below one thousand that... 阅读全文
摘要:
昨天在地铁上,突然想到当天是21号,星期一。打开手机看了一下,2001年1月1号正好是星期一。于是就有一个有趣的问题:那么21世纪中(2001-2100),每个月的1号,同时又是星期一的日子大约有多少天:A. 50 B. 150 C. 350 D. 550当然,答案是后来设计的。当时我考虑这... 阅读全文