There are different types of numbers

  • Natural Numbers
  • Whole Numbers
  • Integers
  • Rational Numbers
  • Irrational Numbers
  • Real numbers
  • Complex numbers

 

Natural numbers

Numbers which start from 1.

Eg:- 1, 2, 3, 4,………..

 

Whole numbers

Numbers which start from 0.

Eg:- 0,1, 2, 3, 4,………..

 

Integers

Positive and negative numbers are called integers

Eg:-  ……… -4, -3, -2, -1, 0, 1, 2, 3, 4,………..

 

Rational Numbers

Numbers which can be written in p/q form, where q ≠ 0

Eg:- 2/3, 4/5

 

Irrational Numbers

Numbers which cannot be expressed in p/q form.

Eg:- √2, √3, π

 

Real Numbers

All Numbers on number line are real numbers.

Number line.jpg

It includes rational numbers & irrational numbers both.

 

There are some numbers which we will study in Class 11,

Complex numbers.

  1. Chapter 1 Class 9 Number Systems
  2. Concept wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 7 years. He provides courses for Mathematics and Science from Class 6 to 12. You can learn personally from here https://www.teachoo.com/premium/maths-and-science-classes/.
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