Question for this: based on the wording of the question, I don't see how you can assume that the overlapping action & drama number of 5 (or the overlapping action & comedy # of 3, or the overlapping drama & comedy # of 4) can be (5-X), where X is the # for a video falling under all 3 categories.
The wording said: "Some movies are classified under more than one category: 5 are both action and drama ...." - to me, this clearly says that 5 fall under ACTION & DRAMA ; these
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The wording said: "Some movies are classified under more than one category: 5 are both action and drama ...." - to me, this clearly says that 5 fall under ACTION & DRAMA ; these
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