Is 7.9 irrational

No, 7.9 is not an irrational number; it is a rational number. Rational numbers can be expressed as a fraction of two integers, and 7.9 can be represented as ( \frac{79}{10} ). In contrast, Irrational Numbers cannot be expressed as a simple fraction and have non-repeating, non-terminating decimal expansions. Examples of irrational numbers include √2 and π.