| jmouse |
2008-03-20 09:50 |
提交题目
相应版主号召，挑Euler上的一些题目来做每日一题。
等这些题目进入每日一题之后我会在ruby小case我的帖子里写我的心得。
(Euler Problem 3)
The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 600851475143?
(Euler Problem 7)
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
What is the 10001st prime number?
(Euler Problem 9)
A Pythagorean triplet is a set of three natural numbers, aa² + b² = c²
For example, 3² + 4² = 9 + 16 = 25 = 5².
There exists exactly one Pythagorean triplet for which a + b + c = 1000.
Find the product abc. |
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