Hi Mich.
It is a pretty standard aptitude test. Practice on working out practical mathematical questions
fast in a way that suits you. Most of the maths questions involve a scenario eg. Two planes fly from point A to point B at different speeds, they use this much fuel, what will be their difference in weight etc.
If you get through to the team exercises just be yourself, use judgement to be a pro-active member at the right times and know how to show your leadership potential.
As a successful applicant of the cadet-ship I can tell you that I did not prepare for the process and just applied my skills in the best way I could. I am not some sort of academic genius(they usually dont make good pilots
) I simply gave it everything I had and showed that I wanted it the most.