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  2. Indian mathematics - Wikipedia

    en.wikipedia.org/wiki/Indian_mathematics

    Indian mathematics emerged in the Indian subcontinent [1] from 1200 BCE [2] until the end of the 18th century. In the classical period of Indian mathematics (400 CE to 1200 CE), important contributions were made by scholars like Aryabhata, Brahmagupta, Bhaskara II, Varāhamihira, and Madhava.

  3. Names of large numbers - Wikipedia

    en.wikipedia.org/wiki/Names_of_large_numbers

    Names of numbers above a trillion are rarely used in practice; ... The highest numerical value banknote ever printed was a note for 1 sextillion peng ... 800 400 10 2403:

  4. Sixteenth note - Wikipedia

    en.wikipedia.org/wiki/Sixteenth_note

    In music, a 1/16, sixteenth note or semiquaver is a note played for half the duration of an eighth note (quaver), hence the names. It is the equivalent of the semifusa in mensural notation , first found in 15th-century notation.

  5. Square root of 2 - Wikipedia

    en.wikipedia.org/wiki/Square_root_of_2

    Technically, it should be called the principal square root of 2, to distinguish it from the negative number with the same property. Geometrically, the square root of 2 is the length of a diagonal across a square with sides of one unit of length; this follows from the Pythagorean theorem. It was probably the first number known to be irrational. [1]

  6. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    A pie chart showing the percentage by web browser visiting Wikimedia sites (April 2009 to 2012). In mathematics, a percentage (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100.

  7. Chernobyl disaster - Wikipedia

    en.wikipedia.org/wiki/Chernobyl_disaster

    Officially it was stated that all contaminants had settled to the bottom "in an insoluble phase" and would not dissolve for 800–1000 years. [63]: 64 [better source needed] A year after the accident it was announced that even the water of the Chernobyl plant's cooling pond was within acceptable norms.

  8. Mister 880 - Wikipedia

    en.wikipedia.org/wiki/Mister_880

    Mister 880 is a 1950 American light-hearted romantic drama film directed by Edmund Goulding and starring Burt Lancaster, Dorothy McGuire and Edmund Gwenn.The movie is about an amateurish counterfeiter who counterfeits only one dollar bills, and manages to elude the Secret Service for ten years.

  9. Hebrew numerals - Wikipedia

    en.wikipedia.org/wiki/Hebrew_numerals

    The later hundreds (500, 600, 700, 800 and 900) are represented by the sum of two or three letters representing the first four hundreds. ... Note: Officially, numbers ...