Advantage (PnP): Roll twice pick highest
Advantage (BG3): Not a fricken clue.
Er, not quite, Furyou.
31 is the base maximum you can pass with just core stat and simple proficiency - that's 11 + 20
I think I did the maths with take 10? Or maybe I was just going off our group's normal rolls XD but yes, I made a small mistake there.