Combines two previously published works, resulting in ninety-three brain-teasing puzzles, riddles, and questions with an emphasis on humor.

A prominent popular science writer presents simple instructions for 100 illustrated experiments. Memorable, easily understood experiments illuminate principles related to astronomy, chemistry, physiology, psychology, mathematics, topology, probability, acoustics, other areas.

本书包括逻辑、数、几何学、概率、统计、时间等内容。

Famed puzzle expert explains math behind a multitude of mystifying tricks: card tricks, stage "mind reading," coin and match tricks, counting out games, geometric dissections, etc. More than 400 tricks. 135 illustrations.

A collection of math and logic puzzles features number games, magic squares, tricks, problems with dominoes and dice, and cross sums, in addition to other intellectual teasers.

Fair, witty appraisal of cranks, quacks, and quackeries of science and pseudoscience: hollow earth, Velikovsky, orgone energy, Dianetics, flying saucers, Bridey Murphy, food and medical fads, and much more.

This book consists of 75 utterly original and totally tantalizing brain teasers from master puzzler George J. Summers. He brings out fascinating challenges in situations as common as a game of tic-tac-toe or tennis or as strange as a land of habitual Truth tellers and Liars. These puzzles and teasers are constructed with clues, helpful solution and detailed answers that show you step-by-step how a teaser or a puzzle is unraveled.