536 Puzzles and Curious Problems

Contents

INTRODUCTION

ARITHMETICAL AND ALGEBRAICAL PROBLEMS

Money Puzzles

Age Puzzles

Clock Puzzles

Speed and Distance Puzzles

Weight Puzzles

Digital Puzzles

Skeleton Puzzles

Cryptarithm Puzzles

Miscellaneous Puzzles

GEOMETRICAL PROBLEMS

Triangle, Square, and other Polygon Puzzles

Circle Puzzles

Dividing-the-Plane Puzzles

Plane Geometry Puzzles

v

vii

3

II

14

16

30

32

43

47

50

81

IOI

104