Indo-Arabic numerals are a 10-number series ranging from 0 to 9 corresponding to digits in the decimal number system. They originated in India and were introduced to Europe in the 12th century through the works of Middle Eastern mathematicians. This course introduces you to the Indo-Arabic numeric system the world's most widely used numbering system. It begins by introducing Arabic numerals used throughout the Arabic-speaking world before moving onto letters in the Arabic language.The following section presents the letter Seen the 12th letter in the Arabic alphabet. You will discover that the letter Seen sounds like ‘S’ in English. Next you will explore the letter Seen with short and long vowels. We will also explain the letter Seen (س) with Tanween Fat7ah Damah and Kasrah. Arabic letters can have four different forms corresponding to an initial middle or final. You will learn how the letter Seen links to the letter before or after.The 13th letter of the Arabic alphabet Sheen is explained in the final section. In English it sounds like the sound 'sh' in English. You'll learn about short and long vowels as well as Tanween for the letter Sheen. Finally you will discover the characterization of the letter Sheen and its relationship to its place in the phrase. So sign up for this course now and study Arabic numerals and the 12th and 13th letters of the Arabic alphabet.