Summary: Classes of Real Numbers

Key Concepts

• Real numbers

Glossary:

Irrational number

A number that cannot be written as the ratio of two integers. Its decimal form does not stop and does not repeat.

Rational number

A number that can be written in the form $\frac{p}{q}$ , where p and q are integers and $q\ne 0$ . Its decimal form stops or repeats.

Real number:

A number that is either rational or irrational.

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