Episode Description: To stop the POGs’ prediction network, Max and Molly realize they need help—and fast. However, they are torn on whether or not they can trust Charlene. To test her honesty, they recreate an experiment with a “lost” wallet stuffed with cash. Will Charlene pass the test? As math, probability, and human behavior collide, the Problem Solvers learn that trust might be the most valuable currency of all.

Math Concepts: Ratios and fractions; Percent conversion; Probability and win–loss percentages in sports; Division and rounding; Estimation and Averages; Multiplication with large numbersHistory/Geography Concepts: Real-world behavioral science experiment on lost wallets (conducted across 40 countries); Quarantine and disease prevention (mono); The concept of global research studies and data collection