Numbers are all around us. They can explain where electricity comes from, why we look like our parents, why moons revolve around planets, and why it''s so hard to win the lottery. Arranged in thematic chapters that are easy for the non-mathematical mind to navigate and understand, We''ve Got Your Number investigates all aspects of math and numbers. As an added bonus, each chapter also contains concise and accessible mathematical fun facts in one of four forms: Good at Sums, which profiles great mathematicians; Try This at Home, entertaining number games and puzzles; What''s Your Problem?, common real-life math challenges like calculating the size of the Earth (don''t worry it shows you how to solve them); and What''s In a Number? a fact-file ''biography'' filled with iconic numbers as zero, 1, 3, ''unlucky'' 13 and 1 million.