My Berlitz dictionary does not list "final" as a translation for "definitivi," or vice versa. Since Duo's dictionary hints also don't show "final" as a translation for "definitivi," this exercise is troublesome. Inasmuch as the words final and definitive are roughly synonymous in this context, I'd like to see both as acceptable.
what it means in English versus what it means in Italian is part of the problem here. numbers not definite means the numbers may change , not final means not all yet recorded. Both mean change, obviously, but in a slightly different way. but in English. In Italian, what is the definitive answer?