Find how many Pythagorean triangles allow tiling with a perimeter < 100,000,000.
The prime factorisation of binomial coefficients
Powers With Trailing Digits
Right triangles with integer coordinates
Finding Nim positions consisting of heap sizes n, 2n and 3n for n ≤ 230 that result in a losing game.
Solve SuDoku puzzles
An unexpected way of using two cubes to make a square.
Make plurals of English words from the given input
Build a fence to maximize an area enclosed between the fence and a fixed wall
Add two reversed numbers and output their reversed sum