Project Euler 1–Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The
Project Euler 6–Sum square difference
The sum of the squares of the first ten natural numbers is,
12 + 22 + … + 102 = 385
The square of th
Project Euler 7–10001st prime
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
Project Euler 4–Maximum path sum I
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2
Project Euler 2–Even Fibonacci numbers
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting w
Project Euler 3–Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 60085
Project Euler 9–Special Pythagorean triplet
A Pythagorean triplet is a set of three natural numbers, a<b<c， for which,
$a2 + b2 = c2$
For exampl
Project Euler 5–Smallest multiple
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any rema
Project Euler 8–Largest product in a series
Find the greatest product of five consecutive digits in the 1000-digit number.
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