**Number System PDF:- **आप सभी जानते है की आजकल जो परिक्षाये आयोजित हुई है उनमे कम से कम एक प्रश्न सीधे सीधे **Number System Questions and Answers****, Number System PDF for CAT **पर पूछा जा रहा है इसलिए यह महत्वपूर्ण हो जाता है की आप **Number System Quantitative Aptitude, SSC ****Number System PDF**** **के पुरे टोपिक को अच्छे से कवर कर ले ताकि कोई भी घुमा फिरा के प्रश्न पूछा जाये तो आप आसानी से उसका जवाब देने में सक्षम हो, so **Number System Handwritten PDF, Number System PDF in Hindi **सम्बन्धित सम्पूर्ण जानकारी को निचे दिए गये बिन्दुओ के माध्यम से पढ़ते है.

Hello Friends we are welcome you on sscnotespdf.com website. In this section, you can find numerous aptitude questions with answers and explanation, so The quantitative aptitude questions with answers covers various categories and extremely helpful for competitive exams.

The quantitative aptitude questions contain aptitude questions asked for various placement exams and competitive exams. These will help students who are preparing for any type of competitive examinations. We share Number System questions with explainetion in Hindi.

In this Post we share **Decimal Number System, Number System in Hindi, Number System Conversion, Binary Number System.**

## Latest Handwritten Number System Class Notes PDF Download

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In this Post we share **Number System Chart, Number System in Maths PDF, Number System in Computer, Number System Examples.**

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**SSC Mathematics Handwritten Notes PDF**

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**Natural Numbers** : Numbers which are used for counting the objects are called natural numbers. They are denoted by N.

N = { 1, 2, 3………………..}

All positive integers are natural numbers.

**Whole numbers** :- When ‘zero’ is included in the natural numbers, they are known as whole numbers.

They are denoted by W.

W= { 0, 1, 2, 3……………….}

**Integers** : All natural numbers, zero and negatives of natural numbers are called as integers.

They are denoted by I.

I = { ………………..,-3, -2, -1, 0, 1 , 2, 3………………}

**Rational numbers** : The numbers which can be expressed in the form of \frac{p}{q} where P and Q are integers and q\neq o are called rational numbers

They are called by Q.

### Number System Notes PDF

No.-1. **Natural Numbers** : Numbers which are used for counting the objects are called natural numbers. They are denoted by N.

N = { 1, 2, 3………………..}

All positive integers are natural numbers.

No.-2. **Whole numbers** :- When ‘zero’ is included in the natural numbers, they are known as whole numbers.

They are denoted by W.

W= { 0, 1, 2, 3……………….}

No.-3. **Integers** : All natural numbers, zero and negatives of natural numbers are called as integers.

They are denoted by I.

No.-4. **Prime number** : A prime number is a natural number greater than 1 and is divisible only by 1 and itself.

No.-5. **Composite Numbers** : A number, other than 1, which is not a prime number is called a composite number .

No.-6. **Co-prime numbers** : Two numbers are co-prime of their HCF is 1.

E.g. (2,3), (3,4) , (5,7), (3,13) etc.

No.-7. **Even numbers** : The number which is divisible by 2 is called even number.

E.g. – 2, 4, 6, 8…………….

No.-8. **Odd numbers** – The number which is not divisible by 2 is called odd number.

e.g.= 3, 5, 7, 9…………..

**Number System PDF**

**Natural Numbers**

No.-1. Natural numbers or counting numbers starting from 1,2,3,…. are the most familiar numbers.

No.-2. They are symbolically represented by N. Natural numbers together with 0 are called whole numbers.

No.-3. Sum of two natural numbers is a natural number. Also, product of two natural numbers is a natural number.

**Integers**

No.-1. Natural numbers are the subset of integers.

No.-2. Natural numbers without zero are called positive integers and when written with a negative sign are called as negative integers.

No.-3. The set of integers is represented by the symbol Z.

**Rational Numbers**

No.-1. A fraction with an integer numerator and a positive integer in the denominator.

No.-2. It is represented in the form of p / q where p and q are integers and q is not equal to zero

No.-3. Decimal numbers which have a repeating pattern after some point also fall under this category. Example: 0.083333…. = 1 / 12

No.-4. All integers are rational numbers

**Irrational Numbers**

No.-1. A number that cannot be written as fraction i.e p / q

No.-2. It is a never-ending number and does not repeat itself in the decimal form. Example: π = 3.14159…

No.-3. This was first discovered by the Pythagorean in Greece

**Real Numbers**

No.-1. The set of all the rational and irrational numbers are called real numbers

No.-2. Represented by the symbol R

**Prime Numbers**

No.-1. Any real number that is divisible by 1 and itself come under this category

No.-2. Example of prime numbers 1,2,3,5,7,11…

**Number System in Hindi**

In this Post we share **Number System Chart, Number System in Maths PDF, Number System in Computer, Number System Examples, Number System PDF.**

No.-1. 5 years ago the average age of a family which includes father, mother and a son was 35 years. 3 years ago the average age of father and mother was 46 years. What is the present age (in years) of the son?

Options:

1) 20

2) 24

3) 26

4) 22

Correct Answer: 22

No.-2. The cost price of 60 articles is same as the selling price of x articles. If there is a profit of 20%, then what is the value of x?

Options:

1) 15

2) 30

3) 50

4) 80

Correct Answer: 50

No.-3. A person scores 45% of the total marks in the exam and still fails by 40 marks. The passing percentage of the exam is 55%. What is the maximum marks of the exam?

Options:

1) 300

2) 350

3) 400

4) 500

Correct Answer: 400

No.-4. A man starts running from point P at 11:00 a.m. with a speed of 10 km/hr. He runs for 2 hours and then takes a 1 hour rest. He continues this till he is caught by another man who starts at 2:00 p.m. from point P and runs non-stop at a speed of 15 km/hr towards the first man. At what time (in p.m.) will the first man be caught?

Options:

1) 6:20

2) 4:40

3) 6:00

4) 5:30

Correct Answer: 4:40

No.-5. The difference of compound interest and simple interest for 3 years and for 2 years are in ratio 23 : 7 respectively. What is rate of interest per annum (in %)?

Options:

1) 200/7

2) 100/7

3) 300/7

4) 400/7

Correct Answer: 200/7

**Details of Number System PDF**

- Subject – Mathematics Notes
- Topic – Numbers System
- Format – PDF
- Type –Typewritten

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