birthday problem

A mathematical improbability in the Third Round of the FA Cup could have upset the Premiership sides.
Coincidences are familiar to us all but what are the so-called laws of chance? From coin tossing to freak weather events, Geoffrey Grimmett explains how probability is at the heart of it all.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.