What is a Set?

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What is a set?

A set is a collection of distinct items that we call elements.

There are infinite sets.
There are finite sets.

Let A = a set of infinite items.

A = {shoes, pie, beach, sand, hair,. . .}

Let B = a set of finite items.

B = {Matthew, Mark, Luke, John}

There are only 4 gospels in the New Testament. Thus, set B represents a finite set.

The same thing can be done with numbers.

Is any of this right?
 

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