Question

Regarding sets, what is an *intersection*, and what is a *union*?

Accepted Answer

An intersection, shown by a $$\cap$$, is the collection of elements found in each set.    
A union, shown by a $$\cup$$, is the collection of elements in one set, the other set, or both sets.

Flashcard 8 - Next Generation Quantitative Reasoning, Algebra, and Statistics Flashcard Set for the ACCUPLACER Test

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