Arabic numerals are the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Arabic numerals are sometimes called Hindu-Arabic numerals. Systems for writing down numbers (called numeration systems) developed over many thousands of years. The decimal numeration system we use today was originally developed in India.
The decimal system originated with Hindu mathematicians living in ancient India about 500 CE. This system was adopted by Persian mathematicians, and later Arab mathematicians. They came to Europe in the tenth century (900-999 CE). These ten digits are now used throughout the world, with many languages and peoples.
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