For the IQ/Intelligence Test part, I think it is quite hard to prepare as these problem can all be done by elementary math but can be quite tricky given the time constraint. Math problems require you to do basic math operations really fast like 53 * 29, 1001 * 11. For the sequence part, you are required to find patterns in sequence as fast as possible e.g. 2 5 11 17 (23). My advice is to skip over the hard problem like 564 * 11 and focus on the easier one. (I think it is almost guaranteed that you can not finish all the problems provided by them)