The Colossal Book of Short Puzzles and Problems
My Best Mathematical and Logic Puzzles (Dover Recreational Math)
Entertaining Mathematical Puzzles
Martin Gardner's Mathematical Games
Hexaflexagons, Probability Paradoxes, and the Tower of Hanoi (Martin Gardner's First Book of Mathematical Puzzles and Games)
Perplexing Puzzles and Tantalizing Teasers (Dover Children's Activity Books)
Mathematics, Magic and Mystery (Dover Recreational Math)