Author: Neil Saunders, Senior Lecturer in Mathematics, Department of Mathematical Sciences, City St George's, University of London

Here are the answers to the festive maths quiz I set on December 23. I hope you enjoyed it. Read more: The magic of maths: festive puzzles to give your brain and imagination a workout nestdesigns/Shutterstock Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, […]