Mathematical circus: more puzzles, games, paradoxes, and other mathematical entertainments from Scientific American with a preface by Donald Knuth, a postscript from the author, and a new bibliography by Mr. Gardner: thoughts from readers, and 105 drawing

The twenty chapters of this book are nicely balanced between all sorts of stimulating ideas, suggested by down-to-earth objects like match sticks and dollar bills as well as by faraway objects like planets and infinite random walks. We learn about ancient devices for arithmetic and about modern explanations of artificial intelligence. There are feasts here for the eyes and hands as well as for the brain. The chapters of this book first appeared in *Scientific American*'s monthly "Math Games" column. Among the topics covered, let's mention: optical illusions, random walks, Boolean algebra, spheres and hyperspheres, cyclic numbers, Fibonacci numbers. Solutions to all problems.