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Assorted Classic Problems

Spring 2026 · 8 problems

Well-travelled problems that reward a second look.

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What is in it

Problems only — the club works these out together at meetings. Topic and attribution are listed as a starting point.

1. Which is Larger? ArithmeticEasyMindYourDecisions
2. 100 Lockers Logic / ArithmeticNumberphile
3. The Golden Root AlgebraMediumTipping Point / Ramanujan
4. The Three Semicircles GeometryMediumMindYourDecisions
5. Power Tower Number Theory / Harder
6. Inscribed Square Geometry / Harder3Blue1Brown (inspired)
7. Sums of Consecutive Integers Number Theory / Competition
8. Langley's Adventitious Angles Geometry / HarderE. M. Langley, Math. Gazette, 1922