Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs ...

Test your problem-solving skills with these 62 lateral thinking puzzles. They’ll challenge you to think out of the box to ...

A viral TikTok maths puzzle has left social media users scratching their heads - but we all know someone who can solve it ...

Depicted above is a regular octagon, the shape of a stop sign. The distance L between two vertices on the octagon is L = 35.4375738925 inches. Find the area A of the entire octagon. First correct ...