Who’s smarter — a four-year-old chimp or a four-year-old human? How much does it cost to stop a computer virus? And will you really become a billionaire at 31? The answers to all these questions — as well as over 100 brain-busting and mind-bending number games, puzzles and quizzes — are in Adam Spencer’s The Number Games.

It doesn’t matter if you’re 6 or 60, this fascinating adventure from 1 to 100 is the perfect way to exercise the grey matter, keep you on your toes … and make you, well, generally AWESOME! So sharpen your pencils and get ready for this year’s most exciting battle: The Number Games.

In 1996, while doing a Maths PhD at Sydney University, Adam Spencer won the Melbourne International Comedy Festival Raw Comedy Championship. He went on to host the triple j Breakfast Show with Wil Anderson before graduating to 702 ABC Sydney where he secured record ratings for the station for eight years. His TV credits include The Glasshouse, Good News Week, The Project, Q&A and, with Dr Karl, Sleek Geeks. He is the author of several popular maths books including Big Book of Numbers, World of Numbers, Time Machine, and The Number Games. He lives in Sydney.