# Irrational Number

Written by Jerry Ratzlaff on . Posted in Algebra

An irrational number is a number that cannot be written as a fraction.

• $$\large{ \pi = 3.141592..... }$$
• $$\large{ \sqrt 2 = 1.414213... }$$
• $$\large{ \frac {19}{4} = 0.052632... }$$
• $$\large{ e=2.71828182... }$$