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.

Of numbers, beauty and bizarre animals.

We are very pleased with our new toy demonstrating the curvature of any smooth function – now you can try it out too!

Are there more irrational numbers than rational numbers, or more rational numbers than irrational numbers? Well, there are infinitely many of both, so the question doesn't make sense. It turns out, however, that the set of rational numbers is infinite in a very different way from the set of irrational numbers.

Not necessarily, when it comes to money.

How to make a hard problem easy by changing the way you look at it.

A triangle has many centres....