What is the term for a number that can be expressed as a fraction of two integers?

The term for a number that can be expressed as a fraction of two integers is a rational number. By definition, a rational number is any number that can be written in the form ( \frac{a}{b} ), where ( a ) and ( b ) are integers, and ( b ) is not zero. This encompasses integers and fractions, as integers can be represented as fractions by placing them over 1 (for example, ( 3 ) can be expressed as ( \frac{3}{1} )).

In contrast, real numbers include both rational and irrational numbers, but the question specifically asks for a subset of real numbers that meet the fraction criteria, which is why "real number" does not fit this requirement. Whole numbers are a subset of integers and do not cover all forms of fractional representation. Complex numbers include a real part and an imaginary part, which is not merely a fraction of integers, thus that option does not apply either. Therefore, rational numbers are the precise answer in this context, more accurately describing the relationship between integers in fraction form.