👉 Non-rational numbers are those that cannot be expressed as a ratio of two integers. This means that they do not have a simple fraction representation, such as 3/4 or 5/6. For example, 1.0 is a rational number because it can be written as a fraction with a denominator that contains only one (e.g., 1/1). However, 1.2 does not fit this definition since it cannot be expressed in the form of a ratio of