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Kathryn Kingham
Find {5} ∪ {45}.
Find the set of five ∪ the set of 45.
This ∪ here represents the word “union.” When we’re talking about sets, the union is all the elements contained in either of the sets we’re combining. Here we have a set that contains the number five and a set that contains the number 45. The union of these sets would be a set that contains five and 45.
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