“Irrational numbers are those real numbers which are not rational numbers!”

Def.1: Rational Number

A rational number is a real number which can be expressed in the form of where and are both integers relatively prime to each other and being non-zero.
Following two statements are equivalent to the definition 1.
1. is rational if and only if and are integers relatively prime to each other and does not equal to zero.
2. .

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