What time is it now when it would be half as long until midnight as it would be if it were one hour earlier? If you enjoy mathematical and mechanical calculations and appreciate challenges to your lat
Mathematics was only one area of interest for Gerolamo Cardano?the sixteenth-century astrologer, philosopher, and physician was also a prolific author and inveterate gambler. Gambling led Cardano to t
"Math enthusiasts of all ages will delight in this collection of more than 200 riddles drawn from every mathematical discipline. Only an elementary background is needed to enjoy and solve the tremendo
245 brainteasers include puzzles that test powers of logic, crimes and mysteries that must be solved, word puzzles and games, charades or situation puzzles best played in a group, and more.
Stimulating treasury of entertaining tricks, stunts, and magical effects based on such mathematical principles and ideas as magic squares, the Fibonacci Series, Moebius strips, cycloids, topology, and
Praised for its "exceptionally good value" by the Journal of Recreational Math, this book offers fun-filled insights into many fields of mathematics. The brainteasers include original puzzle
