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

本书包括逻辑、数、几何学、概率、统计、时间等内容。

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 intel

Fair, witty appraisal of cranks, quacks, and quackeries of science and pseudoscience: hollow earth, Velikovsky, orgone energy, Dianetics, flying saucers, Bridey

This book consists of 75 utterly original and totally tantalizing brain teasers from master puzzler George J. Summers. He brings out fascinating challenges in s