**Rational Numbers**

All positive and negativefractions, including integers and so-called improper fractions. Formally, rational numbers are the set of all real numbers that can be written as a ratio of integers with nonzero denominator. Rational numbers are indicated by the symbol .

Note: Real numbers that aren't rational are called irrational.

**See also**

Natural numbers, whole numbers, algebraic numbers, imaginary numbers, complex numbers, transcendental numbers

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