Entertaining collection includes stimulating puzzles involving arithmetic, money, speed, plane and solid geometry, topology, more. Solutions.
Editors Note 1
Only an elementary knowledge of math is needed to enjoy this entertaining compilation of brain-teasers. It includes a mixture of old and new riddles covering a variety of mathematical topics: money, speed, plane and solid geometry, probability, topology, tricky puzzles and more. Carefully explained solutions follow each problem. 65 black-and-white illustrations.|