Steinhaus, Mathematical Snapshots
Polya, Mathematics and Plausible Reasoning
Pappas, The Joy of Mathematics
Gardner, The Colossal Book of Short Puzzles and Problems
Winkler, Mathematical Puzzles: A Connoisseur's Collection
Andrews, Number Theory (Dover Books on Advanced Mathematics)
- The last book is not really that advanced, It can be understood by most with an understanding through high school algebra II.
- The last book is not really that advanced, It can be understood by most with an understanding through high school algebra II.