| Question | Answer |
| ∪ | Union - means everything in the sets. Used to combine sets. |
| ∩ | Intersect - the elements in BOTH sets. |
| A’ | Complement of A - everything in the universe outside of set A. |
| U | Universal set - what the sets are made up of. The universal set is represented by a large rectangle in a Venn diagram. |
| ∈ | An element - one of the "things" in the set. |
| ⊆ | Subset - A set inside another set. |
| ∉ | Not an element. |
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