Note: Year 28 consists of three rounds of five problems each.Click to download the Round 1 problems
Note: The Problem 2 wording has been revised slightly. Specifically, at the end of condition (ii), we have added and within each row the squares are contiguous. The problem file above contains the revised wording.
Note: The figure for Problem 1 may not display correctly in some pdf readers. We encourage participants to use Adobe Acrobat Reader or print the problems.
Web deadline: 8 PM Eastern / 5 PM Pacific on the due date
Mail deadline: Postmarked on or before the due date
Remember to fully justify all your answers - don't just send numerical answers.
Read the complete rules to learn more about how to submit your solutions.
You can also check out past years' USAMTS problems.