The IMO Olympiad Question Paper for Set C (2025-2026) is now the most relevant paper, as the Set C exam is scheduled to be held today, December 12, 2025.

The Science Olympiad Foundation (SOF) typically releases the official Question Paper and its corresponding Answer Key (Solutions) shortly after the exam.

While the question paper itself is usually distributed to participating schools on the exam day, you can check the provided link for the release of the official IMO Set C Answer Key (Solution PDF), which is expected to be released in January 2026.

https://school.careers360.com/download/sample-papers/sof-imo-class-8-sample-paper-2025-26

You can use the page to monitor the release of the answer key for your specific class here: https://school.careers360.com/articles/imo-answer-key