Best Casebook to practice McKinsey Style interviewer led maths heavy cases

Hi,

First of all your question has several statements that are not true to life:

1. McKinsey Style interviewer led - at McKinsey you can have both Candidate and Interviewer led cases. In the first round, you'll have the cases from the McKinsey interviewer guides led mainly by the interviewer. Partners and directors on the second round have their own favorite cases and mainly want you to lead the case
2. Maths heavy word problems - all the three MBB companies have math problems of a similar level. Bain has more printouts (tables, graphs). BCG has more market sizing. McKinsey has more ops math.

Thus:

• If you need the best book for cases - Case in point is still the best so far. However, the best and most useful cases are the cases from the real case interviews given to you by the other candidates
• If you need a casebook to practice math problems - I recommend downloading all casebooks available online and going through all math problems they have

Best!