Professor Stewart's Casebook of Mathematical Mysteries
Professor Stewart's Cabinet of Mathematical Curiosities
Professor Stewart's Hoard of Mathematical Treasures

“Professor Stewart's Casebook of Mathematical Mysteries”, “Professor Stewart's Cabinet of Mathematical Curiosities”, and “Professor Stewart's Hoard of Mathematical Treasures” are all splendiferous books about brain teasing questions and processable answers. Yes, it does sound like this is only for that really brainy guy in year 9, but this is just like one of those short Q&A quizzes that you get on Friday, just expanded. This isn’t a burden of 3 math books, it’s a series of all those Q&A questions that you get once-a-week! For enthusiastic math-lovers.