@Wannabe380:
In response to your question, just gonna add my two cents in here:-
CTC will set you a numerical reasoning test, approximately 15 questions with a time limit of 10 minutes, which is similar to OAA I believe. This is part of the PILAPT test, and it is randomised.
Best thing to do is practise the 'type' of questions that may ask, such as currency conversion and speed/distance/time equations.
Search for 'Pilot Aptitude Tests' on here, and you'll find a couple of websites that will be able to help you prepare.
Good luck!