Olympiad Practice Hub

Free sample test

Experience the way OPH turns answers into understanding.

Try three illustrative questions without registering. This sample is untimed and does not save personal data or create an account.

Before you begin: Choose one answer for each question. Submit at the end to see your score and explanations. These illustrative questions are not an official Olympiad paper.
Question 1 of 3Untimed sample

Which number completes the pattern: 2, 6, 12, 20, ?

Select one answer