# Sets: Elements, Union, Intersection

Videos, solutions, activities and worksheets to help SAT students review sets: elements, union and intersection. Some sample SAT questions are also presented.

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More Lessons on SAT Math

Set Terminology
Learn what set terminology is.
A set is a collection of well defined objects or items.
The objects or items are called elements of the set.
There are three methods to define sets: verbal or word description, roster method (list out the elements), the set notation.
Empty or null sets.
Union of Sets

Intersection of Sets
Intersection of Two Sets
Example:
If S is the set of positive integers that are multiples of 7, and if T is the set of positive integers that are multiples of 13, how many integers are in the intersection of S and T? Sets and Venn Diagram

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