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Real numbers are numbers that can be found on the number line. This includes both the rational and irrational numbers.
A real number is a value that represents a quantity along a continuous line. The real numbers include all the rational numbers, such as the integer −5 and the fraction 4/3, and all the irrational numbers such as √2 (1.41421356…, the square root of two, an irrational algebraic number) and π (3.14159265…, a transcendental number). Real numbers can be thought of as points on an infinitely long line called the number line or real line, where the points corresponding to integers are equally spaced. Any real number can be determined by a possibly infinite decimal representation such as that of 8.632, where each consecutive digit is measured in units one tenth the size of the previous one. The real line can be thought of as a part of the complex plane,
and complex numbers include real numbers.
It also can be formed in the number line.

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The set of rational and irrational  number  together are called   real number.
and  rational number , integers , whole number  and  natural number   are comes into real number..
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