It depends what kind of mixed pack you are referring to. I bought the Indica Champ Mixed Pack from Paradise. Sensi Star, Ice Cream, and White Berry. They are individually labelled and packaged. Oh yeah prob the best money I ever spent on beans. I know Greenhouse sells similar mixed packs and they color their seeds so you know them apart.
If you are referring to the mixed up packs, where breeders toss seconds and seeds that got mixed in the sorting process..say like Peak, then its any guess as to what you are getting.