Match Wits With Mensa: The Complete Quiz Book

Ultimate IQ Tests: 1000 Practice Test Questions to Boost Your Brainpower (Ultimate Series)

The Complete Book of Intelligence Tests: 500 Exercises to Improve, Upgrade and Enhance Your Mind Strength

The 125 Best Brain Teasers of All Time: A Mind-Blowing Challenge of Math, Logic, and Wordplay

IQ and Psychometric Test Workbook: Essential Preparation for Verbal Numerical and Spatial Aptitude Tests and Personality Tests (Testing Series)

The Moscow Puzzles: 359 Mathematical Recreations

My Best Mathematical and Logic Puzzles (Dover Recreational Math)

300+ Mathematical Pattern Puzzles: Number Pattern Recognition & Reasoning (Improve Your Math Fluency)

GENIUS INTELLIGENCE: Secret Techniques and Technologies to Increase IQ (The Underground Knowledge Series Book 1)

Of Course! The Greatest Collection Of Riddles & Brain Teasers For Expanding Your Mind