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1. Number Systems Mathematics Class 9 In English Medium Ncert Book Solutions Exercise 1.2


 NCERT Solutions Mathematics class 9

 

1. Number Systems : Exercise 1.2 Mathematics class 9th:English Medium NCERT Book Solutions

NCERT Books Subjects for class 9th Hindi Medium

Chapter 1. Number Systems Exercise 1.2: NCERT Book Solutions for class 9th. All solutions and extra or additional solved questions for 1. Number Systems : Exercise 1.2 Mathematics class 9th:English Medium NCERT Book Solutions.. All ncert books and cbse syllabus are solved chapter by chapter and also exercise within chapter and exercise solved by our expert in Hindi and English Medium for studends.

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1. Number Systems

 

Exercise 1.2

Exercise 1.2 

 

Q1. State whether the following statements are true or false. Justify your answers.

(i) Every irrational number is a real number.
(ii) Every point on the number line is of the form m , where m is a natural number.
(iii) Every real number is an irrational number.

Solution: 

(i) Every irrational number is a real number.  (True)

Justification: Real numbers are collections of both rational and irrational numbers. 

(ii) Every point on the number line is of the form √m , where m is a natural number.   (False

Justification: Number line contains both negative and positive integers where m is a natural number, so there is no possibility to express negative number within square root. 

(iii) Every real number is an irrational number.  (False

Justification: Real numbers are collections of both rational and irrational numbers not only irrational number. 

Q2. 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: No, the square roots of all positive integers are not only irrational but also they are rational. 

Examples: 

​√1 = 1        rational 

√2 = √2      irrational 

√3 = √3      rational 

√4 = 2        rational 

√9 = 3        rational 

Q3. Show how 5 can be represented on the number line.

Solution: 

 

 

 

 

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See other sub-topics of this chapter:

1. Exercise 1.1 class 9 Chap-1. Number Systems

2. Exercise 1.2 class 9 Chap-1. Number Systems

3. Exercise 1.3 class 9 Chap-1. Number Systems

4. Exercise 1.4 class 9 Chap-1. Number Systems

5. Exercise 1.5 class 9 Chap-1. Number Systems

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NCERT Solutions

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Notes And NCERT Solutions

Our NCERT Solution and CBSE Notes are prepared for Term 1 and Terms 2 exams also Board exam Preparation.

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Mathematics Chapter List

  • 1. Number Systems

  • 2. Polynomials

  • 3. Coordinate Geometry

  • 4. Linear Equation In Two Variables

  • 5. Introduction To Euclid’s Geometry

  • 6. Lines and Angles

  • 7. Triangles

  • 8. Quadrilaterals

  • 9. Area Parallelograms and Triangles

  • 10. Circles

  • 11. Constructions

  • 12. Herons Formula

  • 13. Surface Areas and Volumes

  • 14. Statistics

  • 15. Probability


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