Definition for Number and Numerals

Roman numerals are generally used as symbols that stand for numbers. The seven basic symbols that are used in Roman Numerals are : I (1), V (5), X (10), L (50), C (100), D (500), and M (1,000). Sometimes a bar is place over a numeral to multiply it by 1,000.
What is a Number ?
A number is actually a way of thinking, an idea, that enables us to compare very different sets of objects. It can actually be called an idea behind the act of account.

What are Numerals ?
Numerals are used to name numbers, in other words, a numeral is a symbol used to represent a number. For example, the numeral 4 is the name of a number four. And again four is the idea that describes any collection of four objects. 4 pens, 4 books, 4 people and so on. We recognize that these collections all have the quality of “fourness” even though they may differ in every other way.