Number System – Mathematics for SSC examination
This post represents theories, examples, and formulae related to the Number System that are useful for examinations like SSC. This page containing Number System notes is kind of a ready reckoner page for students and candidates preparing for Mathematics for the SSC examination or other competitive examinations.
Types of Numbers
Types of numbers discussed: Natural, Whole, Integers, Rational, Irrational, Real and Complex(Imaginary) numbers
![](https://physicsteacher.in/wp-content/uploads/2021/07/image-16.png)
Types of Natural Numbers
Various Types of Natural Numbers:
![Types of Natural Numbers](https://physicsteacher.in/wp-content/uploads/2021/07/image-17.png)
![Types of Natural Numbers](https://physicsteacher.in/wp-content/uploads/2021/07/image-18.png)
Prime Number
Prime number
![Prime Number](https://physicsteacher.in/wp-content/uploads/2021/07/image-19.png)
Tests of divisibility
Divisibility of a number
![Tests of divisibility](https://physicsteacher.in/wp-content/uploads/2021/07/image-20.png)
![Tests of divisibility](https://physicsteacher.in/wp-content/uploads/2021/07/image-21.png)
![Tests of divisibility](https://physicsteacher.in/wp-content/uploads/2021/07/image-22.png)
Some important theorems
![Some important theorems](https://physicsteacher.in/wp-content/uploads/2021/07/image-23.png)
![Some important theorems](https://physicsteacher.in/wp-content/uploads/2021/07/image-24.png)
Some formula
![some important formula](https://physicsteacher.in/wp-content/uploads/2021/07/image-25.png)
Congruence of numbers
![Number system notes - Congruence of numbers](https://physicsteacher.in/wp-content/uploads/2021/07/image-26.png)