Game shows, flight and social media bots are among the problems solved in this issue's Dear Dirichlet agony aunt column
Graeme Foster asks if there are more odd or even numbers in the triangle
In 2018, scientists discovered a new shape that is essential to multicellular life
Make calculations easy with this simple-to-make slide rule
Hyperbolic surfaces, Klein bottles and more
Here is a very exciting way to measure how similar is your music playlist between your friends, or how similar are your Facebook contacts.
