# Maths in a minute

Want facts and want them fast? Our *Maths in a minute* series explores key mathematical concepts in just a few words. From symmetry to Euclid's axioms, and from binary numbers to the prosecutor's fallacy, learn some maths without too much effort.

A quick introduction to transcendental numbers, a famous problem which relates to them, and how the person who solved it became a victim of political tensions.

Take a quick trip to the foundations of probability theory.

Double counting proves a neat result in graph theory.

*dark matter*. But if it's invisible how do they know it's there?

Compound interest is the curse of debt and the blessing of saving. Find out how it works and what it has to do with one of the most important numbers in mathematics.

Here's a quick introduction to the beauty queen amongst mathematical formulas.