Interesting fact about "Arabic" numerals. They were actually developed in INDIA.
From "Arabic numerals" on Wikipedia:
Arabic numerals are the ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. The term often implies a decimal number written using these digits, which is the most common system for the symbolic representation of numbers in the world today, and is also called Hindu–Arabic numerals. However the term can mean the digits themselves, such as in the statement "octal numbers are written using Arabic numerals."
Although the Hindu–Arabic numeral system (i.e. decimal) was developed by Indian mathematicians around AD 500, they were modified into Arabic numerals later in North Africa. It was in the North African city of Bejaia that the Italian scholar Fibonacci first encountered the numerals; his work was crucial in making them known throughout Europe.