Free drill: Probability drill: mixed

8 questions · untimed · a worked solution after each answer

Eight questions across counting, dice and cards, conditional probability, expected value and estimation, each with a worked solution. Check each answer to see the worked solution and why every option is right or wrong.

Line drawing of two dice, a coin and a small fanned hand of blank playing cards on a table

Before you start

Questions come one at a time and you cannot go back. Check each answer to see the worked solution before moving on.
Work without a calculator. Optiver states that calculators are not permitted in its assessment.

Optiver, Maven Securities, Flow Traders, Susquehanna International Group (SIG), IMC, Akuna Capital and PEAK6 are trademarks of their respective owners. Game Assessment Prep is an independent practice site and is not affiliated with, endorsed by or sponsored by any of these firms. Every question is original; none is taken from a firm’s assessment or another prep provider.