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  2. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...

  3. Week - Wikipedia

    en.wikipedia.org/wiki/Week

    The English word week comes from the Old English wice, ultimately from a Common Germanic *wikōn-, from a root *wik-"turn, move, change". The Germanic word probably had a wider meaning prior to the adoption of the Roman calendar, perhaps "succession series", as suggested by Gothic wikō translating taxis "order" in Luke 1:8.

  4. Wikipedia:Record charts - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Record_charts

    Billboard magazine is the provider of US charts; however, its use on Wikipedia when mentioning charts should be limited: i.e., charts should simply be referred to as US followed by the chart name. The only two exceptions to this rule are the Billboard Hot 100 and the Billboard 200 , which should include Billboard as it is a part of the actual ...

  5. Spanish verbs - Wikipedia

    en.wikipedia.org/wiki/Spanish_verbs

    Spanish verbs form one of the more complex areas of Spanish grammar. Spanish is a relatively synthetic language with a moderate to high degree of inflection, which shows up mostly in Spanish conjugation.

  6. Un Verano Sin Ti - Wikipedia

    en.wikipedia.org/wiki/Un_Verano_Sin_Ti

    A critical and commercial success, Un Verano Sin Ti debuted atop the US Billboard 200, marking Bad Bunny's second number-one album and the second all-Spanish language album to top the chart. [7] It spent 13 weeks atop the chart and topped the Billboard 200 Year-End Chart as the best-performing album of the year, the first Spanish language album ...

  7. Billboard Year-End - Wikipedia

    en.wikipedia.org/wiki/Billboard_Year-End

    Prior to incorporating chart data from Nielsen SoundScan (from 1991), year-end charts were calculated by an inverse-point system based solely on a title's performance (for example a single appearing on the Billboard Hot 100 would be given one point for a week spent at position 100, two points for a week spent at position ninety-nine, and so forth, up to 100 points for each week spent at number ...

  8. Month - Wikipedia

    en.wikipedia.org/wiki/Month

    A month is a unit of time, used with calendars, that is approximately as long as a natural phase cycle of the Moon; the words month and Moon are cognates.The traditional concept of months arose with the cycle of Moon phases; such lunar months ("lunations") are synodic months and last approximately 29.53 days, making for roughly 12.37 such months in one Earth year.

  9. Eight-day week - Wikipedia

    en.wikipedia.org/wiki/Eight-day_week

    The Celts used periods of darkness such as night and winter to begin their calculations of time. This meant that the first period of time in a "week" was a night, followed by a day.