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 ...

This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

A version of this puzzle originally appeared in the October 1960 issue of Scientific American. What’s the Most Distant Galaxy ...

What’s more, doing maths is often a collaborative endeavour – and can be a great source of fun and fulfilment when people ...

A graphic artist is testing everyone’s knowledge of algebra and attention to detail with a pictograph math problem that assigns numbers to different plants. Gergely Dudás, of Budapest, Hungary, shared ...

Fascinatingly, this puzzle was labelled on TikTok as a "maths puzzle for kids". So if you're struggling to work out the ...