Question

Which number is irrational?

Answer 1

An irrational number is a number that cannot be expressed as a fraction for any integers

For example:
Square root of 9
Square root of 36
Pi

Answer 2

Explanation:

What are the numbers?

Irrational numbers are not rational. For example: pi, √2, √78, etc.

Irrational numbers can't be expressed as a fraction