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With respect to a sealed box of 60, is there a random distribution or is it "rigged"? The reason I ask is: the probability of getting 3 complete sets from 60 minifies, assuming equal probability of each, is about .0000045. 59 random bags give about a 0.5 probability of getting one of each of 18. 80 random bags give about a 0.8 chance of getting one of each of 18. So either buying a sealed box requires some luck to get at least one of each (much less 3) OR a sealed box is pre-packaged to contain at least some minimum quantity of each design. Maybe I'm living under a rock (first time poster), but which is it?