Numbers which cannot be expressed as p/q is known as irrational number.

Eg:- √2, √3, √5, π

Now,

     √2  = 1.41421356...

     √3  = 1.73205080...

     √5  = 2.23606797...

         π = 3.14159265...

 

We note that all the decimal expansion are non- terminating, non-repeating.

  1. Chapter 1 Class 9 Number Systems
  2. Concept wise

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.