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  2. Tally marks - Wikipedia

    en.wikipedia.org/wiki/Tally_marks

    The number shown is 82. Tally marks, also called hash marks, are a form of numeral used for counting. They can be thought of as a unary numeral system. They are most useful in counting or tallying ongoing results, such as the score in a game or sport, as no intermediate results need to be erased or discarded. However, because of the length of ...

  3. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The Roman numerals, in particular, are directly derived from the Etruscan number symbols: 𐌠 , 𐌡 , 𐌢 , 𐌣 , and 𐌟 for 1, 5, 10, 50, and 100 (they had more symbols for larger numbers, but it is unknown which symbol represents which number). As in the basic Roman system, the Etruscans wrote the symbols that added to the desired ...

  4. Halfwidth and fullwidth forms - Wikipedia

    en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms

    Some terminals and editing programs could not deal with double-byte characters starting at odd columns, only even ones (some could not even put double-byte and single-byte characters in the same line). So the DBCS sets generally included Roman characters and digits also, for use alongside the CJK characters in the same line.

  5. Roman numeral analysis - Wikipedia

    en.wikipedia.org/wiki/Roman_numeral_analysis

    An upper case numeral that is not followed by a symbol is understood as a major chord. The use of Roman numerals enables the rhythm section performers to play the song in any key requested by the bandleader or lead singer. The accompaniment performers translate the Roman numerals to the specific chords that would be used in a given key.

  6. 21 (drinking game) - Wikipedia

    en.wikipedia.org/wiki/21_(drinking_game)

    As the game progresses, each player in turn must recite one to four numbers, counting in sequence from where the previous player left off: Saying one number (e.g. "one") passes the game to the next player in the circle in the initial direction. Saying two numbers (e.g. "one, two") passes to the next player, but reverses direction.

  7. History of ancient numeral systems - Wikipedia

    en.wikipedia.org/wiki/History_of_ancient_numeral...

    Number systems have progressed from the use of fingers and tally marks, perhaps more than 40,000 years ago, to the use of sets of glyphs able to represent any conceivable number efficiently. The earliest known unambiguous notations for numbers emerged in Mesopotamia about 5000 or 6000 years ago.

  8. Numerals in Unicode - Wikipedia

    en.wikipedia.org/wiki/Numerals_in_Unicode

    Grouped by their numerical property as used in a text, Unicode has four values for Numeric Type. First there is the "not a number" type. Then there are decimal-radix numbers, commonly used in Western style decimals (plain 0–9), there are numbers that are not part of a decimal system such as Roman numbers, and decimal numbers in typographic context, such as encircled numbers.

  9. Halfwidth and Fullwidth Forms (Unicode block) - Wikipedia

    en.wikipedia.org/wiki/Halfwidth_and_Fullwidth...

    Halfwidth and Fullwidth Forms is a Unicode block U+FF00–FFEF, provided so that older encodings containing both halfwidth and fullwidth characters can have lossless translation to/from Unicode.