Nrich

One of our favourite problems from our sister site NRICH opens a door to the world of combinatorics and symmetry.
  • The Smith report: Making mathematics count
  • Quadratic equations in Parliament!
  • New look for Nrich - Our sister site Nrich unveils its new site design.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.