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The Number System Natural Number Whole Number Integer Prime Number Composite Number

Natural Number : These are the number that start from 1 and have no end . e.g. 1, 2, 3, 4, ...,
whole number

Whole Number : the natural numbers including zero are the whole number . e.g. 0,1,2,3,4....

Integers : All negative and positive natural numbers including zero are integers. e.g. .... - 4, -3, -2, -1, 0, 1, 2, 3, 4, 5...

Even Number : The integers that can be completely divided by 2 are called even numbers.

odd even number

Odd Numbers : The integers that can't be completely divided by 2 are called odd numbers. e.g. -5,3,7,19 etc

Important Note: 1 is neither a prime number nor a composite number.

prime number

Prime Number : A natural number that can only be divided by 1 or the number itself.
e. g. 5, 23, 7 etc.
The natural numbers that have only two positive factors. 1 and the number itself.

Knowing kind of numbers is basic knowledge for doing good in mathematics. It is very much important to have clear cut idea about the number system. Keeping this view all the kind of numbers are collected on one page to avoid any confusion. I hope this will help students a lot.

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