Cricket, coursework and karaoke are among the problems solved in this issue's Dear Dirichlet agony aunt column
Tyler Helmuth has lost his ant-vocado
Phone assistants, duplicating pastries, and being a 10 anywhere else are among the topics of discussion in this issue's Dear Dirichlet advice column
The definitive chart of the best tools
What connects the products of twin primes with something you learnt in primary school and the number 8?
Be in for a chance to win a £100 goody bag if you can solve our fiendish crossnumber
