Google, IBM & Meta Certificates – 40% Off
One plan covers every Professional Certificate on Coursera.
Unlock All Certificates
Watch an 18-minute mathematics video exploring an innovative and challenging digit sum problem. Learn advanced problem-solving techniques as mathematics educator Michael Penn breaks down and solves what he considers the most creative digit sum problem encountered in his teaching career. Follow along with detailed explanations and step-by-step solutions that demonstrate sophisticated mathematical reasoning and creative approaches to number theory.
