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  2. Indian numbering system - Wikipedia

    en.wikipedia.org/wiki/Indian_numbering_system

    Commonly used quantities include lakh (one hundred thousand) and crore (ten million) – written as 1,00,000 and 1,00,00,000 respectively in some locales. [1] For example: 150,000 rupees is "1.5 lakh rupees" which can be written as "1,50,000 rupees", and 30,000,000 (thirty million) rupees is referred to as "3 crore rupees" which can be written ...

  3. Hindustani numerals - Wikipedia

    en.wikipedia.org/wiki/Hindustani_numerals

    Like many Indo-Aryan languages, Hindustani (Hindi-Urdu) has a decimal numeral system that is contracted to the extent that nearly every number 1–99 is irregular, and needs to be memorized as a separate numeral. [1]

  4. History of large numbers - Wikipedia

    en.wikipedia.org/wiki/History_of_large_numbers

    Different cultures used different traditional numeral systems for naming large numbers.The extent of large numbers used varied in each culture. Two interesting points in using large numbers are the confusion on the term billion and milliard in many countries, and the use of zillion to denote a very large number where precision is not required.

  5. Billion - Wikipedia

    en.wikipedia.org/wiki/Billion

    1000 million Mark Notgeld banknote (1923) of Frankfurt am Main. According to the Oxford English Dictionary, the word billion was formed in the 16th century (from million and the prefix bi-, "two"), meaning the second power of a million (1,000,000 2 = 10 12). This long scale definition was similarly applied to trillion, quadrillion and so on ...

  6. 1,000,000,000 - Wikipedia

    en.wikipedia.org/wiki/1,000,000,000

    In standard form, it is written as 1 × 10 9. The metric prefix giga indicates 1,000,000,000 times the base unit. Its symbol is G. One billion years may be called an eon in astronomy or geology. Previously in British English (but not in American English), the word "billion" referred exclusively to a million millions (1,000,000,000,000). However ...

  7. Hindu units of time - Wikipedia

    en.wikipedia.org/wiki/Hindu_units_of_time

    12 hours (1 day proper: kalpa) of Brahma = 4.32 billion solar years (1,000 chatur-yugas; 14 manvantaras + 15 manvantara-sandhyas) 24 hours (1 day & night: kalpa + pralaya) of Brahma = 8.64 billion solar years; 30 days (1 month) of Brahma = 259.2 billion solar years; 12 months (1 year) of Brahma = 3.1104 trillion solar years

  8. List of languages by total number of speakers - Wikipedia

    en.wikipedia.org/wiki/List_of_languages_by_total...

    380 million 1.135 billion 1.515 billion Mandarin Chinese (incl. Standard Chinese, but excl. other varieties) Sino-Tibetan: Sinitic: 941 million 199 million 1.140 billion Hindi (excl. Urdu) Indo-European: Indo-Aryan: 345 million 264 million 609 million Spanish (excl. creole languages) Indo-European: Romance: 486 million 74 million 560 million

  9. Giga- - Wikipedia

    en.wikipedia.org/wiki/Giga-

    Giga-(/ ˈ ɡ ɪ ɡ ə / or / ˈ dʒ ɪ ɡ ə /) is a unit prefix in the metric system denoting a factor of a short-scale billion or long-scale milliard (10 9 or 1,000,000,000). It has the symbol G .