With a set, the difference and subset operations are not symmetric.

Name: With a set, the difference and subset operations are not symmetric.
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Quizplus · Accepted Answer

The difference operation is not symmetric because the order matters. For example, A-B is not the same as B-A if A and B are not identical sets. The subset operation is also not symmetric because A may be a proper subset of B (i.e., A is a subset of B but B is not a subset of A).

With a Set, the Difference and Subset Operations Are Not