This is not a simple question, as it scholars don`t stop arguing about the meter in Plautus. Nevertheless, it is known the basic: the verse is a iambic senarius. The last word contains a perfect iamb. But what about the rest?
Here it goes:
Pauci sint faxim qui sciant quod nesciunt.
In other words, the question I entreaty you to answer is: are the sciant and the last syllables of nesciunt the only iambs of this verse?