In this section of NCERT Class 9 Mathematics Solution we provide the solution of all questions, so each and every student can understand the concept the solution.
Go to the solutions of exercise 1.3
In cbse class 9 maths chapter 1 exercise 1.2 solutions, mainly we discuss about irrational number and definition related questions:
Irrational number – A number which can’t be written in the form of p/q where p and q are integer and q ≠0
Question 1– State whether the fallowing statement True or False .Justify your answer ?
(1)-Every irrational number is a real number?
True! All rational and irrational number is Real number.
(2)-Every point on the number line is of the form √m,where m is a natural number ?
False !
(3)-Every real number is an irrational number ?
False ! Because Real number is a combination of rational and irrational number,so it may be irrational number.
Question. 2
Are square root of all positive integers is irrational number ?
If not ,give an example of the square root of a number that is a rational number .
No! Because √4 = 2 ,√9 = 3 etc. which is rational number
Every real number is represented by a unique point on the number line. Also, every point on the number line represents a unique real number.