**Numeral **: In Hindu Arabic system, we use ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
called digits to represent any number. And a group of digits, denoting a number is called a numeral.

1.Natural Numbers : Counting numbers 1, 2, 3, 4, 5,..... are called natural numbers.

2.Whole Numbers : All counting numbers together with zero form the set of whole numbers. Thus,

- 0 is the only whole number which is not a natural number.
- Every natural number is a whole number.

3.Integers : All natural numbers, 0 and negatives of counting numbers i.e., {..., - 3 , - 2 , - 1 , 0, 1, 2, 3, ...,} together form the set of integers.

- Positive Integers : {1, 2, 3, 4, ..., ...} is the set of all positive integers.
- Negative Integers : {- 1, - 2, - 3,.., ..} is the set of all negative integers.
- Non-Positive and Non-Negative Integers : 0 is neither positive nor negative. So, {0, 1, 2, 3, ..., ...} represents the set of non-negative integers, while {0, - 1 , - 2 , - 3 ,.., ..} represents the set of non-positive integers.

4. Even Numbers : A number divisible by 2 is called an even number, e.g., 2, 4, 6, 8, 10, etc.

5. Odd Numbers : A number not divisible by 2 is called an odd number. e.g., 1, 3, 5, 7, 9, 11, etc.

6. Prime Numbers : A number greater than 1 is called a prime number, if it has exactly

Most Visited Webpages

1. Future Exp. Estimate Calculator

2. How to Reset Income Tax Password

3. Income Tax Calculator

4. DA / Expected DA Banker's For Pensioner

5. PPF Calculator (as per revised Intt Rate)

1. Future Exp. Estimate Calculator

2. How to Reset Income Tax Password

3. Income Tax Calculator

4. DA / Expected DA Banker's For Pensioner

5. PPF Calculator (as per revised Intt Rate)