Preparatory Problems

Theory and Practical

Mentors
The IChO 2025 Preparatory Problems, along with their solutions, have been released via Olympify to mentors for reading and translation.

If any country mentors are not able to access the problems via Olympify, please contact us on: info@icho2025.ae.

Others
You can access just the questions from below.
Theory - Prep Problems
Experiment - Prep Problems
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