Question

Any number that can be written as a ratio of two integers

Answer 1

Rational number

Explanation:

Any number that can be written as a ratio of two integers is a rational number.

In the question, you have the keyword 'ratio', meaning a comparison between two numbers. For example 1.5 can be expressed as the ratio between 3 and 2 (3/2), as a fraction.

When a number cannot be expressed as a fraction, it's called an irrational number. The most famous irrational number of all would be pi (π). You cannot express pi in a ratio between numbers, because it's too complicated, it's basically an infinite number without any periodicity.