Murderous Maths: Easy Questions, Evil Answers

Why do people think Friday 13th is unlucky? How can you make a liar tell the truth? How many people in the world share your birthday? "Easy Questions, Evil Answers" provides the answers to all these questions and more. It's the perfect laugh-out-loud, boredom busting read for everyone who's ever wondered just how many footballs you can fit in a swimming pool and how long it takes to count to a million.