# Rational and Irrational Numbers

### Notes:

A number r is called a rational number, if it can be written in the form p/q where p and q are integers and q ≠ 0

For example:
1, 1/2, .33333.

A number s is called irrational, if it cannot be written in the form p/q where p and q are integers and q ≠ 0

For example:
√2, √3, 0.10110111011110...