Probably changed since I did the tests in 196*, but the only thing I can say is "Stop and Think".
They certainly
weren't things you could train for, or practice. They're designed to cut through all that, and simply determine whether you have: hand/eye coordination; the ability to analyse problems and think logically under pressure; organise a team; and not talk cr@p
I went through the system for both the RAF and the FAA - several times actually, to the point where the barman in the Candidates' Mess at Biggin Hill remembered me. I made it, eventually!
You are what you are - and I
do hope, for your sake, it meets the requirements! Good luck.
BRNC 1963
OCTU 1965
Ret'd 1994