Now we know that Rational numbers are numbers which are positive or negative and that can be expressed in the form pq where q≠0. Also irrational numbers are numbers which cannot be expressed in the form pq where q≠0.<br />class 9 maths chapter 1<br />number system class 9<br />maths class 9 chapter 1<br />class 9th maths chapter 1<br />class 9 chapter 1 maths<br />chapter 1 maths class 9
