Sets

Idea of a Set

A set is a well-defined collection of elements.

The objects used to form a set are called elements or the members of the set.

N represents the set of all natural numbers.

Z represents the set of all integers.

R represents the set of all real numbers.

There are two
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Types of Sets

A well-defined collection of objects is called a set. The number of elements in a set is called its cardinal number. If a set has finite number of elements, it is called a finite set.

If a set has infinite number of elements, it is called infinite set.

If elements of two sets are equal
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