Question

What are real numbers ????

Answer 1

In mathematics, a real number is a value of a continuous quantity that can represent a distance along a line. The adjective real in this context was introduced in the 17th century by René Descartes, who distinguished between real and imaginary roots of polynomials.

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Answer 2

A quantity that can be expressed as an infinite decimal expansion.

The real numbers include the positive and negative integers and fractions (or rational numbers) and also the irrational numbers.