Hindu–Arabic numeral system system is based upon ten (originally nine) different glyphs. The symbols (glyphs) used to represent the system are in principle independent of the system itself. The glyphs in actual use are descended from Brahmi numerals and have split into various typographical variants since the Middle Ages. These symbol sets can be divided into three main families: Western Arabic numerals used in the Greater Maghreb and in Europe, Eastern Arabic numerals (also called "Indic numerals") used in the Middle East, and the Indian numerals used in South Asia. The Hindu-Arabic numerals were invented by mathematicians in India. Perso-Arabic mathematicians called them
Strike/Flight numerals gold stars were used for the second through the fifth awards, seventh through tenth awards, and so on. Silver stars were used in lieu of five gold stars, and denote the sixth and eleventh (and so on) awards. Strike/Flight numerals A Strike/Flight Numeral is a Department of the Navy device that may be awarded for wear on the Air Medal to individuals serving in any capacity in the United States Armed Forces. A Strike/Flight Award is awarded to individuals for meritorious achievement while participating in sustained aerial flight operations, under flight orders. Strike/Flight Numerals are bronze Arabic numerals 5/16 inch