The Summer 2025 Featured Problem Series ran on my website from June 2 through August 4. A new series begins today, October 13, and runs through December 15.
Each Monday during the run a new problem will be posted along with the solution to the previous week’s problem. These will be posted at
The problems come from the courses I tutor, and include problems from combinatorics, probability, abstract algebra, real analysis and more.
There is also an archive of the Summer Series problems and solutions at the above link. Today I am posting the archive content here too.