# Absolute Value or Modulus of a Real Number – An Idea of Number System

What is Absolute value or Modulus?

Let a be a real number, then the modulus or absolute value of a is denoted by |a| and

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# Absolute Value or Modulus of a Real Number – An Idea of Number System

# Irrational Number – An Idea of Number System

# Rational Number – An Idea of Number System

What is Absolute value or Modulus?

Let a be a real number, then the modulus or absolute value of a is denoted by |a| and

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.

What is rational number?

A number of the form p/q, where p, q are integers, prime to each other and q ≠ 0 is called