# Irrational Numbers

## Irrational Numbers

Any number that is not rational is called irrational.  Here are a few examples of some irrational numbers:

$\pi = 3.14159265$

$\sqrt{2} = 1.41421356$

Every rational number can be written as a repeating decimal, such as $\frac{1}{3} = 0.33333$ is a rational number where as $\pi$, above, is not repeating.  This is a quick and easy test with a calculator if you are confused as to whether or not a number is irrational.

Between any two real numbers there is a rational number and an irrational number.