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  2. Slang terms for money - Wikipedia

    en.wikipedia.org/wiki/Slang_terms_for_money

    Slang terms for money often derive from the appearance and features of banknotes or coins, their values, historical associations or the units of currency concerned. Within a language community, some of the slang terms vary in social, ethnic, economic, and geographic strata but others have become the dominant way of referring to the currency and are regarded as mainstream, acceptable language ...

  3. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The generator polynomial specified for the (26,19,2) code, is: = + + + + + + +, which may also be written in the form of a matrix of decimal coefficients: [1 127 122 154 164 11 68 117] The 17-byte long message "www.wikipedia.org" as hexadecimal coefficients (ASCII values), denoted by M1 through M17 is:

  4. Arabic numerals - Wikipedia

    en.wikipedia.org/wiki/Arabic_numerals

    Al-Nasawi wrote in the early 11th century that mathematicians had not agreed on the form of the numerals, but most of them had agreed to train themselves with the forms now known as Eastern Arabic numerals. [6] The oldest specimens of the written numerals available are from Egypt and date to 873–874 AD.

  5. United States dollar - Wikipedia

    en.wikipedia.org/wiki/United_States_dollar

    The Act also limited the free silver right of individuals to convert bullion into only one coin, the silver dollar of 412.5 grains; smaller coins of lower standard can only be produced by the United States Mint using its own bullion. Summary and links to coins issued in the 19th century: In base metal: 1/2 cent, 1 cent, 5 cents.

  6. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The use of S (as in VIIS to indicate 7 1 ⁄ 2) is attested in some ancient inscriptions [45] and also in the now rare apothecaries' system (usually in the form SS): [44] but while Roman numerals for whole numbers are essentially decimal, S does not correspond to 5 ⁄ 10, as one might expect, but 6 ⁄ 12.

  7. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    A conventional way to indicate a repeating decimal is to place a bar (known as a vinculum) over the digits that repeat, for example 0. 789 = 0.789789789.... For repeating patterns that begin immediately after the decimal point, the result of the conversion is the fraction with the pattern as a numerator, and the same number of nines as a ...

  8. ASCII - Wikipedia

    en.wikipedia.org/wiki/ASCII

    [3]: 238 §18 The digits 0–9 are prefixed with 011, but the remaining 4 bits correspond to their respective values in binary, making conversion with binary-coded decimal straightforward (for example, 5 in encoded to 0110101, where 5 is 0101 in binary).