The Odd Questions

Paradoxes, contradictions, and curious edge cases that test the limits of definitions and models.

Mathematics and physics are full of situations that appear paradoxical, but each one reveals something essential about how reasoning and abstraction truly work.
This section collects short, rigorous explorations of questions that challenge definitions and intuitions — designed for students, teachers, and anyone who enjoys the borderlands between logic and wonder.

Browse the Questions

Format

  1. Theory recall — key principles and definitions.
  2. Worked reasoning — clear, step-by-step analysis.
  3. Author’s note — reflection on the conceptual meaning.

New “odd questions” are added periodically.
If you’d like to propose one, reach out via the About page.