A box set collection of 10 Murderous Maths Books. Guaranteed to smash your mind features maths with the laughs added in, along with tricks, tips & short-cuts.

Includes The Phantom X, Desperate Measures, The Perfect Sausage and Other Fundamental Formulas, Guaranteed to Bend your Brain, Do you Feel Lucky, Awesome Arithmetricks, Savage Shapes, Guaranteed to Mash your Mind, The Key to the Universe, Easy Questions Evil Answers.