"Which one of you speaks the fewest languages?"
Translation:Kdo z vás umí nejmíň jazyků?
In other which-one-of-you/them sentences, "který" has been used, but here we have "kdo" instead. If this had been a Czech-to-English exercise, I probably would have written "Who among you speaks the fewest languages." Would that have been incorrect?
UPDATE - - - - - I just got this in the other direction and was happy to discover that "Who among you speaks the fewest languages" worked... question cancelled!