Trying to keep those mental muscles in shape? Search no further! Here's a book with hours and hours of IQ-busting fun to challenge your brain strength and test the very depths of your gumption. These innovative, witty, and utterly outrageous brainbusters engage your reasoning power while honing your problem-solving skills. Beginning with easier puzzles, then getting progressively more difficult, this tantalizing collection will increase brain power with each puzzle you conquer. Need help? Don't worry-we've added a special "Solutions" section that gives a detailed answer to each brainbuster. This ingenious volume offers more than 180 puzzlers including: An archaeologist walking along the shore of the Mediterranean Sea finds an old Roman coin. On one side is the face of Julius Caesar and the date is 44 BC. On the other side is an olive tree. The archaeologist says, " The coin is counterfeit." How does she know? What is the probability that if you cut a straight stick at two arbitrary places, you can make a triangle with the three pieces? At Disney World a canal joining two lakes passes over a road on an aqueduct. When a boat goes across, does it increase the load on the aqueduct?Mack, Donald R. is the author of 'Unofficial IEEE Brainbuster Gamebook Mental Workouts for the Technically Inclined', published 1992 under ISBN 9780780304239 and ISBN 0780304233.