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  2. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    For instance, on the clock of Big Ben (designed in 1852), the hours from 1 to 12 are written as: I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII The notations IV and IX can be read as "one less than five" (4) and "one less than ten" (9), although there is a tradition favouring the representation of "4" as " IIII " on Roman numeral clocks.

  3. 231 (number) - Wikipedia

    en.wikipedia.org/wiki/231_(number)

    231 is the 21st triangular number, [1] a doubly triangular number, a hexagonal number, an octahedral number [2] and a centered octahedral number. [3] 231 is palindromic in base 2 (11100111 2). 231 is the number of integer partitions of 16. The Mertens function of 231 returns 0. [4]

  4. Angka hexops - Wikipedia

    en.wikipedia.org/wiki/Angka_hexops

    Angka hexops is a species of Southeast Asian spiders in the family Microstigmatidae. It is the only species in the monotypic genus Angka . [ 1 ] It was first described by Robert Raven & Peter J. Schwendinger in 1995, [ 2 ] and has only been found in Thailand .

  5. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    The masculine nominative/accusative forms dŭŏ < Old Latin dŭō ‘two’ is a cognate to Old Welsh dou ‘two’, [16] Greek δύω dýō ‘two’, Sanskrit दुवा duvā ‘two’, Old Church Slavonic dŭva ‘two’, that imply Proto-Indo-European *duu̯o-h 1, a Lindeman variant of monosyllabic *du̯o-h 1, living on in Sanskrit ...

  6. 12 (number) - Wikipedia

    en.wikipedia.org/wiki/12_(number)

    12 (twelve) is the natural number following 11 and preceding 13. Twelve is the 3rd superior highly composite number , [ 1 ] the 3rd colossally abundant number , [ 2 ] the 5th highly composite number , and is divisible by the numbers from 1 to 4 , and 6 , a large number of divisors comparatively.

  7. 211 (number) - Wikipedia

    en.wikipedia.org/wiki/211_(number)

    211 is an odd number.; 211 is a primorial prime, the sum of three consecutive primes (+ +), a Chen prime, a centered decagonal prime, and a self prime. [1]211 is the smallest prime separated by 12 from the nearest primes (199 and 223).

  8. Brahmi numerals - Wikipedia

    en.wikipedia.org/wiki/Brahmi_numerals

    Evolution of Brahmi numerals from the time of Ashoka. The number "256" in Ashoka's Minor Rock Edict No.1 in Sasaram (circa 250 BCE). Coin of Western Satrap Damasena (232 CE). ). The minting date, here 153 (100-50-3 in Brahmi script numerals) of the Saka era, therefore 232 CE, clearly appears behind the head of the

  9. November (Roman month) - Wikipedia

    en.wikipedia.org/wiki/November_(Roman_month)

    It had 29 days. In the reform that resulted in a 12-month year, November became the eleventh month, but retained its name, as did the other months from September through December. A day was added to November during the Julian calendar reform in the mid-40s BC. The outstanding event during November was the Plebeian Games from the 4th through the ...