Yep. Or flip 2 coins simultaneously and call it.
There wouldn't happen to be a D&D dice that you could get 27% with, is there?They've got some pretty crazy D & D dices that I remember.
Maybe a 100 faced die? Or.....a 9% die could work too if you do it right.
It's been a LONG time, but... two ten sided dice can be used to be the equivalent of a 100 sided die. That is, assign die #1 to be the tens digit and die #2 to be the units digits. Then if your roll = less than 27, success!