# 1. Number Systems Mathematics Class 9 In English Medium Ncert Book Solutions Exercise 1.1

## 1. Number Systems : Exercise 1.1 Mathematics class 9th:English Medium NCERT Book Solutions

## NCERT Books Subjects for class 9th Hindi Medium

Chapter 1. Number Systems Exercise 1.1: NCERT Book Solutions for class 9th. All solutions and extra or additional solved questions for 1. Number Systems : Exercise 1.1 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 1.1

**Exercise:1.1**

Q1. Is zero a rational number? Can you write it in the form p/q, where p and q are integers and q ≠ 0?

**Solution: **

Yes, zero is a rational number, because it can be represented on a number line and it can be written in the form of p/q,

Where P = 0 and q ≠ 0;

Q4. State whether the following statements are true or false. Give reasons for your answers.

(I) Every natural number is a whole number.

(ii) Every integer is a whole number.

(iii) Every rational number is a whole number.

Solution:

(I) Every natural number is a whole number. (True)

**Reason**: Whole numbers contains all natural numbers.

(ii) Every integer is a whole number. (**False**)

**Reason**: Integers have also negative number while whole number does not have such negative numbers.

(iii) Every rational number is a whole number. (**False**)

**Reason:** Rational numbers have variety of numbers, those numbers can not be represented as whole number.

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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