The Phantom X (Murderous Maths)de Kjartan Poskitt5.0 · 1 votosMateriasMathematicsJuvenile humorMathematical recreationsMiscellaneaAlgebraJuvenile literatureEdiciones (1)The Phantom X (Murderous Maths) (2009)Scholastic · ISBN 9781407107134Más obras de Kjartan PoskittEveryday math tricks for grown-upsAgatha Parrot And The Thirteenth ChickenEasy Questions Evil Answers