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Types of Numbers

Natural numbers : These are the numbers (1, 2, 3, etc.) that are used for counting.
It is denoted by N.
 
Even numbers : Natural numbers which are divisible by 2 are even numbers.
It is denoted by E.
E = 2, 4, 6, 8,...
 
Odd numbers : Natural numbers which are not divisible by 2 are odd numbers.
 
Prime numbers : Natural numbers which have exactly two factors, i.e., 1 and the number itself are called prime numbers.
The lowest prime number is 2.
 
Composite numbers : It is a natural number that has atleast one divisor different from unity and itself.
Every composite number can be factorised into its prime factors.
 
Whole numbers : The natural numbers along with zero (0), form the system of whole numbers.
It is denoted by W.
 
Integers : The number system consisting of natural numbers, their negative and zero is called integers.
It is denoted by Z or I.
 
Real numbers : All numbers that can be represented on the number line are called real numbers.
It is denoted by R.

 

 

 

DIVISION ALGORITHM
Dividend = (Divisor × Quotient) + Remainder




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