A collection of "things" (objects or numbers, etc).

Here is a set of clothing items.

Each member is called an element of the set.

A set has only one of each member (all members are unique).

Example: {1,2,3,4} is the set of counting numbers less than 5

Here is a set of clothing items.

Each member is called an element of the set.

A set has only one of each member (all members are unique).

Example: {1,2,3,4} is the set of counting numbers less than 5

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