HOW LONG IS A PIECE OF STRING

Have you ever wondered how the meter in a taxi works? Or why a lift takes so long to respond to your call? Is there a mathematical secret to making a hit single? And how long is a piece of string? In this fascinating book you will find the maths which secretly underpins everyday life. Discover the astonishing '37% rule' for blind dates, how to avoid the gentleman's urinal, extraordinary scams that people have devised to get rich quick, and the origins of the seven-day week.