Question

say about sets a union b

Answer 1

Answer:

The symbol ∪ is employed to denote the union of two sets. Thus, the set A ∪ B—read “A union B” or “the union of A and B”—is defined as the set that consists of all elements belonging to either set A or set B (or both). Any two sets whose intersection is the empty set are said to be disjoint. ...

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