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What’s hot and what’s not, Issue 20
Fashion is fleeting, Chalkdust regulars are not.Machine learning 101
Start your quest to conquer the planet with this introduction to the wonderful world of machine learningCat among the pigeons
Some interesting observations with the pigeonhole principleAdvent quiz
Behind today's door... A quiz!Problem solving 101
Never be stumped by a maths problem again, with this crash course from the ever-competent Stephen MuirheadWhat’s your favourite function? Part II
We have received loads of feedback from people telling us their favourite function