A collection of old and new problems, puzzles, games, and diversions based on probability, geometry, number patterns, magic squares, and the laws of physics.

Table of Contents:

Introduction VII
1. Number Problems 1
2. Number Patterns 21
3. Magic and Party Tricks with Numbers 31
4. Magic Squares and Sliding-Block Puzzles 41
5. Illusions 49
6. Dominoes and Dice 75
7. Physics Puzzles 83
Answers 89