# Irrational Number – An Idea of Number System

What is an Irrational Number?

There is no formal definition of irrational number, but the real number which not rational number is called irrational number.

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# Irrational Number – An Idea of Number System

What is an Irrational Number?

There is no formal definition of irrational number, but the real number which not rational number is called irrational number.