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SUBMIT YOUR IDEAI think I've got a unique solution here.
Dan
My solution:
I had a bit of a problem with understanding the task. "How many combinations of the same objects were purchased" is not a good wording fro me.... "How many combinations of the same objects there were" would be better or "How many different shopping lists there were". It went quick after I understood it :)
I should have used Summary after the sort, instead of a cross-tab / transpose combination