I’ve done the online tests, having thought I’d failed them I found out I passed, I am quite numerate but I’ll tell you my experience.
All questions are really statistics based, checking if you can calculate basic percentages really. They test your attention to detail by using confusing wording to try and catch you out so make sure you read what they’re asking.
The test is 20 mins and has 20 questions. I didn’t finish, completing 17 out of 20 but passed.
I found the verbal reasoning harder but that’s just me, I’ve always been better at maths than I have at English. They both give you practice tests before the actual tests and you can’t actually proceed without getting the practice questions correct, so you’ll be fine.