What does irrational numbers mean in math?

Irrational Numbers are real numbers that cannot be expressed as a simple fraction, meaning they cannot be represented as the quotient of two integers. Their decimal expansions are non-repeating and non-terminating, such as the square root of 2 or π (pi). This distinguishes them from rational numbers, which can be expressed as a fraction. Irrational numbers play a significant role in various mathematical concepts and real-world applications.