good wiki

Arabic numerals

Arabic numerals, also known as Hindu-Arabic numerals, are the number system most commonly used today. They originated in ancient India and were later adopted and refined by Arab mathematicians, who introduced them to Europe during the Middle Ages.

More at Wikipedia

About

They originated in ancient India and were later adopted and refined by Arab mathematicians, who introduced them to Europe during the Middle Ages. The system consists of ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. These numerals are positional, meaning their value depends on their position in a number. The popularity of Arabic numerals increased as they were found to be more efficient for calculations compared to the previously used Roman numerals. They have become the standard numeral system in most parts of the world and are used in various fields, including mathematics, science, and everyday life.