“Math Puzzles and Challenges” by Timothy Pennings, Ph.D., Chair, Department of Mathematics, Davenport University

Polya, or was it Rudin, said that the heart of mathematics is solving problems.  So put away your text books filled with useless definitions and theorems, put on your game face, and come get ready to be stumped by - and perhaps solve -some surprising math puzzles and challenges.  Not for the weak of spirit.