# 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.
This tutorial provides a basic introduction into set builder notation and roster notation. It explains how to convert a sentence and describe it using set notation using the roster method and set builder notation. It contains plenty of examples and practice problems which includes natural numbers, whole numbers, even numbers, odd numbers, integers, prime numbers, positive numbers and negative numbers.

Intersection of Sets, Union of Sets and Venn Diagrams
This tutorial provides a basic introduction into the intersection of sets and union of sets as it relates to venn diagrams. It explains how to find the intersection of two sets as well as the union of two sets. It contains plenty of examples and practice problems on intersection and 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

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. 