Bain has a written case, that looks kind of a test. You can find an example here:
Bain Written Case has 2 parts:
- Case information you have to go through
- Slides with missing info you have to complete
Since each question in a written case has an exact correct answer, the success criteria is the number of questions answered correctly.
The best way to prepare is the following:
- Check if the calculator is allowed. If not - you have to train mental math. I posted the main tips here: https://www.preplounge.com/en/consulting-forum/tips-to-do-big-multiplications-in-my-mind-726#a1422
- Practice solving the cases - basically preplounge website is about it
- Practice reading cases fast and prioritizing the information. You can use 2 sources:
- Written cases in the internet (You can find some of them in google or in case books)
- Harvard cases - either buy or try to download somehwere in the web. You can find a couple of MIT cases here for free: https://mitsloan.mit.edu/LearningEdge/Pages/Case-Studies.aspx The main problem - these free cases don't have any pre-defined questions.