Mensa(r) Everyday Challenging Mind Games: 100 MasterMind Math and Logic Puzzles

American Mensa has members who range in age from 1 to 102, and the community includes people from every walk of life. They include engineers, homemakers, teachers, actors, athletes, students, and CEOs, and all share one trait--high intelligence. To qualify for Mensa, our members scored in the top 2 percent of the general population on an accepted standardized intelligence test.