1d Stage: maths test was not overly hard. You can do it online and also there is a sample test available on PwC website to practice. 2d stage is harder and nclude general business questions, mini essay assessment of your character and suitability to work in a team.
I passed the first stage but failed the second. I wasn’t really prepared for it. I think the key thing you have to show that you are able to work in a team and obey to orders from your managers. I failed the second stage. Only later I found out that there are books and other material available to prepare yourself for it.