Class 9 mathematics Ex 1.2 ncert solutions State whether the following statements are true or false
NCERT Solutions class 9 maths chapter 1 exercise 1.2 Question 1. State whether the following statements are true or false. Justify your answers.
Solution: (i)Every irrational number is a real number.
True a real number can either rational or irrational
(ii)Every point on the number line is of the form √m, where m is a natural number.
False all numbers can lies on number line
(iii)Every real number is an irrational number
False, all real numbers are rational number
Question 2. Are the square roots of all positive integers irrational? If not, give an example of the square root of a number that is a rational number.
Solution: All perfect square number has rational roots
Examples √1 , √4 ,√9 ,√25 ………….
Question 3 Show how √5 can be represented on the number line.
√5 = √(4+1)
Solution: Here 4 and 1 both are perfect square number as √4 = 2 and √1 = 1
So draw right triangle with side 2 and 1
And according to Pythagoras theorem hypotenuse will √(22+12) = √5
Then draw an arc of √5 on number line
class 9 Number System Maths ncert solutions
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