Mathematics » Properties of Real Numbers » Rational and Irrational Numbers

Key Concepts

Key Concepts

Real numbers

Key Concepts


Irrational number

An irrational number is 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 rational number is 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 real number is a number that is either rational or irrational.

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