irrational numbers
https://www.aplustopper.com/irrational-number/
https://sites.google.com/site/aplustoppernotes/irrational-numbers
http://cbsetuts.blogspot.in/2018/01/irrational-numbers.html
A number is irrational if and only if its decimal representation is non-terminating and non-repeating. e.g.[latex]\sqrt{2},\sqrt{3},\Pi \[/latex]................ etc.
Rational number and irrational number taken together form the set of real numbers.
If a and b are two real numbers, then either
(i) a > b or (ii) a = b or (iii) a < b
Negative of an irrational number is an irrational number.
The sum of a rational number with an irrational number is always irrational.
Read more about irrational numbers