Fifty Challenging Problems in Probability with Solutions (Dover Books on Mathematics)

The Stanford Mathematics Problem Book: With Hints and Solutions (Dover Books on Mathematics)

The Moscow Puzzles: 359 Mathematical Recreations (Dover Recreational Math)

Probability Theory: A Concise Course (Dover Books on Mathematics)

My Best Mathematical and Logic Puzzles (Dover Recreational Math)

How to Solve It: A New Aspect of Mathematical Method (Princeton Science Library)

Bayes Theorem: A Visual Introduction For Beginners

Principles of Statistics (Dover Books on Mathematics)

Introduction to Graph Theory (Dover Books on Mathematics)

Probability - A Beginner's Guide To Permutations And Combinations: The Classic Equations, Better Explained

Algorithmic Puzzles