What's the chance that something happens?

Measuring your chance of success.

Markov chains are exceptionally useful tools for calculating probabilities, and they might increase your chance of getting to the beach!

New episodes of Pointless, the addictive TV quiz show, return today! Celebrate with John Haigh and some fascinating Pointless maths!

Take a quick trip to the foundations of probability theory.

Randomness is surprisingly hard to define. Fortunately the mathematical language we use to describe it is beautifully well defined.

The second guiding principle in probability theory is more subtle – universality.

Symmetry is one of the two guiding principles in understanding probabilities – if different outcomes are equivalent they should have the same probability.

Here's a resolution for one of probability theory's most famous paradoxes.

Is the proposed ABBA rule for penalty shootouts really fairer than the existing rule? Maths shows that it is, and also suggests another, more subtle rule.

What's wrong with this probability argument?

The probability distribution that measures success and failure.