There's no single "correct" answer to a jumble puzzle without knowing the specific jumble word it's associated with. The numbers 3, 12, and 25 represent letter positions in the alphabet (or some other code), but to solve this, we need the jumbled letters themselves. Jumbles typically use a set of scrambled letters that, when rearranged, spell a word.
To help you solve this, I need the jumbled letters. Once you provide them, I can assist you in finding the solution.