Question

what do you mean by union of union

Answer 1

Union. The union of two sets is the set of elements that belong to one or both sets. Symbolically, the union of X and Y is denoted by X ∪ Y. As an example, suppose set A = {1, 2, 3} and set B = {1, 3, 5}. Then, the union of sets A and Bwould be {1, 2, 3, 5}.