# RS Aggarwal Class 9 Solutions Chapter 1

## RS Aggarwal Solutions for Class 9 Chapter 1 – Number System PDF

### RS Aggarwal Class 9 Solutions Chapter-wise – Free PDF Download

Students who are studying for CBSE exams need to study RS Aggarwal Class 9 Solutions Chapter 1: Number Systems. Number Systems is the most important topic in math because it is the foundation for all of the other chapters. Chapter 1 of RS Aggarwal Solutions for Class 9 Chapter 1 has 7 exercises and problems that teach you everything you need to know about numbers, such as real, natural, rational/irrational, imaginary, whole, prime, and composite numbers, how they look on a number line, how rationalisation works, and the laws of exponents, among other things.

A student can get the answers to the questions at the end of Chapter 1 with RS Aggarwal Class 9 Solutions Chapter 1. But he also learns things about the ideas that the chapter might leave out or not explain well enough for the student to fully understand. All of the answers in this PDF were written by math teachers with more than 5 years of experience. They know everything there is to know about each topic and can help students with hard questions better than anyone else.

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**RS Aggarwal Class 9 Solutions Chapter 1 – Number System**

**RS Aggarwal Class 9 Solutions Chapter 1 – Number System**

**RS Aggarwal Class 9 Solutions**

## Chapter 1 – Number System

## Chapter 2 – Polynomials

## Chapter 3 – Factorisation of Polynomials

## Chapter 4 – Linear Equations in Two Variables

## Chapter 5 – Coordinate Geometry

## Chapter 6 – Introduction to Euclid’s Geometry

## Chapter 7 – Lines and Angles

## Chapter 8 – Triangles

## Chapter 9 – Congruence of Triangles and Inequalities in a Triangle

## Chapter 10 – Quadrilaterals

## Chapter 11 – Areas of Parallelograms and Triangles

## Chapter 12 – Circles

## Chapter 13 – Geometrical Constructions

## Chapter 14 – Areas of Triangles and Quadrilaterals

## Chapter 15 – Volumes and Surface Area of Solids

## Chapter 16 – Presentation of Data in Tabular Form

## Chapter 17 – Bar Graph, Histogram and Frequency Polygon

## Chapter 18 – Mean, Median and Mode of Ungrouped Data

## Chapter 19 – Probability

#### Introduction: RS Aggarwal Class 9 Solutions Chapter 1

Access to the RS Aggarwal Class 9 Solutions Chapter-1 Number Systems is definitely a blessing for all Class 9 students. Because now, with the help of Solutions by RS Aggarwal, you can get the grades you’ve been hoping for. This set is one of the good ways for CBSE students in Class 9 to prepare for their exams and study on their own. Number Systems is thought to be one of the most important math topics because it is the foundation for most of the other chapters in the Class 9 textbook. Here’s how to get to the RS Aggarwal Class 9 Solutions Chapter-1 Number Systems and why you should use them.

The information in RS Aggarwal Class 9 Solutions Chapter 1 can be used in real life. When you have to solve a math problem in real life, you can see how important it is to know how to work with real numbers. For example, if there are 10 students and only four benches where two people can sit next to each other. You can find out how many students still don’t have a seat in the classroom by using real numbers. Also, when you work through the problems in RS Aggarwal, you will see that rational numbers, integers, and natural numbers can all be shown on a number line.

A student can get the answers to the questions at the end of Chapter 1 with RS Aggarwal Class 9 Solutions Chapter 1. But he also learns things about the ideas that the chapter might leave out or not explain well enough for the student to fully understand. All of the answers in this PDF were written by math teachers with more than 5 years of experience. They know everything there is to know about each topic and can help students with hard questions better than anyone else.

#### Number systems is one of the most important topics for RS Aggarwal solutions for class 9 chapter 1

Well, you already know that almost everything in math has to do with numbers. That’s why this chapter is important in its own way. Let’s look at some of the most important terms in this chapter.

Getting started with **Natural numbers** –

- Natural numbers are the set of all counting numbers that aren’t zero.
- For Example- 1,2,3,4,5,6,7,……………..

**Whole numbers –**

- Whole numbers are all the positive numbers that can be counted, including 0.
- For Example- 0,1,2,3,4,5,6,7,……………..

**Integers: There are two kinds of integers:**

**Positive integers**are the set of all natural numbers, which includes zero.- For Example- 0,1,2,3,4,5,6,7…………
**Negative integers**are the set of all numbers that are not positive and can be counted, including 0.- For Example – ………-7,-6,-5,-4,-3,-2,-1,0

**Rational Numbers-**

- Rational numbers are those that can be written in the form (P/Q), where Q is not equal to zero.
- For Example – 2/3, 3/5, 4/8, etc
- How to discover the rational number between two numbers
- If the two numbers are “a” and “b,” then:
- Rational no.= (a+b)/2

**Irrational numbers –**

- Irrational numbers are ones that can’t be written in the form (P/Q).
- For Example- √7, √11, etc.

**Real numbers –**

- Real numbers include both rational and irrational numbers.
- For Example – -2,4,(1/3), √13, etc are real numbers.

**Prime numbers-**

- A “prime number” is a number that can only be split by 1 and by itself.
- For Example- 2,3,5,7,11,13,17,19,…………

**Composite numbers**: A composite number is a positive whole number or integer that can be made by multiplying two whole numbers together. For example, the number 6 is made up of (2) * (3).

**Complex numbers –**

- Complex numbers are the ones that have both real and made-up numbers in them.
- For Example – (3+ 2i)

##### Benefits of RS Aggarwal Class 9 Solutions

- The solutions are written as per the CBSE guidelines to assist you score well in your examinations.
- These answers are prepared by the experts of Utopper who have more years of teaching experience.
- These solutions are written during a simple manner to maximize retention and improve understanding of the concepts.
- Solutions of every chapter are well categorized to enhance the convenience of use during your revisions.
- Student can also access our special free study materials for their exams like Revision Notes, Important Questions and many more.

## FAQ ( Frequently Asked Questions )

**1. What are real numbers? Can you give me an example?**

Ans – RS Aggarwal Class 9 Chapter 1 Solutions You can also say that Real Numbers are natural numbers. Real numbers are all the numbers that start with 1 and don’t have a minus sign on the left. Even the number you think is the most important is a real number. But 0 is the least real number. Now, a lot of people question whether or not zero is a real number. But it is seen as both a real and a made-up number. A number line can be used to show what zero is. So, even though zero is not a positive number, it is still thought of as a real number.

**2. How can real numbers be used in the real world?**

Ans – There are many places in real life where we can use real numbers. You may think that these numbers are only used in math, but you would be wrong. Here are some real-life problems where you can use real numbers to figure out the answer.

First, when there are a lot of eggs in a chicken farm, you need a way to keep track of how many eggs come from each chicken. The only way to figure out how many eggs there are in total is to add up how many eggs each chicken laid.

If you don’t know how to calculate real numbers, you can’t measure things like the height of a building or the depth of a swimming pool.

**3. Can we say that irrational numbers are real numbers?**

Ans – Yes, an irrational number can be called a real number. Irrational numbers are the ones in Class 9 Maths RS Aggarwal Chapter 1 that can’t have a correct ratio. So, they have to be written as numbers, including numbers after a point. Pi, which is 22/7, is a great example of an irrational number that is also a real number. If you try to find a Pi ratio, you won’t find it soon, and the same is true for its irrational number, which goes on forever and has no end. It is still said to be a real number, though.

**4. Can students look at the RS Aggarwal Class 9 Solutions Chapter 1 Number Systems before they learn it in class?**

Ans – Yes, it is perfectly fine to look at the RS Aggarwal Class 9 Solutions Chapter 1 Number Systems before the chapter is taught in class. But you should make sure you’ve read the theory part carefully and understand what the chapter is trying to say. This Solution by RS Aggarwal only has the answers to the questions in the textbook, so it’s important to know what the questions are about. So, you can get to the RS Aggarwal Class 9 Solutions Chapter-1 Number Systems and understand the ideas well while they are being taught in class.