Just leaving this here. If anybody still struggles with AR like I did, try this. Look for the most generic rule that applies to both of them. If group A has a triangle in the bottom left and group B has a square in the bottom left, use that as your rule. You might not even be close to the actual rule, but this at least helps you eliminate some of the easier ones.
Use this when you've spent over 30 seconds on the question and still haven't gotten anywhere. This is the damage control I fell back on during the actual test because I didn't get the rules for half of them but I used that, and with a little luck (or a lot, I don't know. Probably a lot.) I still managed to get high 700s.