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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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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
Learn about union of sets.

Intersection of Sets
Learn about intersection of sets.
Intersection of Two Sets
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

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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