Hello,

The Science Olympiad Foundation (SOF) provides sample papers for the International Mathematics Olympiad (IMO) to help students familiarize themselves with the exam pattern and question types. For Class 6, these sample papers are available on the official SOF website (https://sofworld.org/imo/class-6/sample-model-test-papers/imo-sample-papers-class-6?utm_source=chatgpt.com) .

For specific sets, such as Set C, answer keys are available. For instance, the answer key for IMO Set C for Class 6 (2023-24) can be found here: SOF IMO question papers .

Hope it helps !