Just so you have an idea, there are over 8x10 14 possible 10 card combinations assuming you can pull a maximum of 1 rare or higher card per pack. For pull rates, there are millions and millions of possible unique 10 card combinations. Keep in mind that for coin flips the result is binary, meaning only 2 possible outcomes. But for pull rates though, 30 packs is nowhere close to enough data. For coin tosses, 30 coins would be sufficient to identify if the coin is fair within a reasonably small margin of error. How much data would be considered sufficient for the Law of the Large Numbers to apply depends on the number of total possibilities. You don't have enough data to establish the exact pull rates of the packs in either real life or in the virtual game. In other words, you do not have any data that can be used as a grounds for comparison. AFAIK, there aren't any published pull rates for anything, not how many GXs every X packs, not how many SRs every Y packs, not how many commons every Z packs, no nothing at all. I would like to see the math that supports this claim.

Pokemon ex in every pack