👉 In mathematics, a set of numbers that cannot be expressed as ratios or fractions is called a non-terminating decimal. These numbers are also referred to as irrational numbers because they do not have a finite or repeating decimal expansion. For example, 3.141592653589793 and π (pi) are examples of non-terminating decimals that cannot be expressed as ratios or fractions. They are both irrational numbers because they do not have a
