It means you can create your own test by choosing from a pool of 2,000+ questions. Our UWorld MBE QBank allows you to select questions from any subject and/or chapter tested on the MBE. You can choose to answer unseen questions or questions that you previously answered incorrectly. You can even choose between ‘Timed’ and ‘Tutor’ mode. This customization gives you full power to personalize your study based on what questions and how many questions you want to answer while studying for the exam.