The Hindu-Arabic numeration system is a number system that uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 to form all possible numbers.
For example, using the digits 4 and 5, you could form the following numbers and more.
45, 54, 445, 54545, etc
The name came from the fact that it originated in ancient India and was later adopted and developed by Arabic mathematicians.
The Hindu-Arabic numeration system is the most commonly used numeration system because it is highly efficient for doing math calculations