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They hand waved away the holodeck power thing in Voyager by days something along the lines of it is a different type of power that wasn’t worth trying to convert to normal power for some reason. Basically just another Voyager excuse to ignore the premises of the show unless they happen to be bored that day.
It’s two cartons of eggs, each container is a dozen and a half. Eggs are normally in units of a dozen so keeping that as a consistent unit across multiple brands and styles makes sense. Costco normally indicates how many things are packaged together more than the overall total. It’s useful to know the format.
If it was on tray of 36 eggs the would have used 3 dozen and the indicator to keep it consistent with the standard unit of eggs.