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  2. Isopsephy - Wikipedia

    en.wikipedia.org/wiki/Isopsephy

    The word rendered "count", ψηφισάτω, psephisato, has the same "pebble" root as the word isopsephy. [6] [7] Also in the 1st century AD, Leonidas of Alexandria created isopsephs, epigrams with equinumeral distichs, where the first hexameter and pentameter equal the next two verses in numerical value. He addressed some of them to Nero:

  3. Prefixes in Hebrew - Wikipedia

    en.wikipedia.org/wiki/Prefixes_in_Hebrew

    There are several prefixes in the Hebrew language which are appended to regular words to introduce a new meaning. In Hebrew, the letters that form those prefixes are called "formative letters" (Hebrew: אוֹתִיּוֹת הַשִּׁמּוּשׁ, Otiyot HaShimush).

  4. Casting out nines - Wikipedia

    en.wikipedia.org/wiki/Casting_out_nines

    If a number is divisible by 9, its digital root is 9. Otherwise, its digital root is the remainder it leaves after being divided by 9. A sanity test in which the above-mentioned procedures are used to check for errors in arithmetical calculations. The test is carried out by applying the same sequence of arithmetical operations to the digital ...

  5. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    Similarly, some are only derived from words for numbers inasmuch as they are word play. (Peta-is word play on penta-, for example. See its etymology for details.) The root language of a numerical prefix need not be related to the root language of the word that it prefixes. Some words comprising numerical prefixes are hybrid words.

  6. International Phonetic Alphabet - Wikipedia

    en.wikipedia.org/wiki/International_Phonetic...

    The official chart of the IPA, revised in 2020. The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script.It was devised by the International Phonetic Association in the late 19th century as a standard written representation for the sounds of speech. [1]

  7. History of mathematical notation - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematical...

    Here thus in the history of equations the first letters of the alphabet became indicatively known as coefficients, while the last letters as unknown terms (an incerti ordinis). In algebraic geometry , again, a similar rule was to be observed: the last letters of the alphabet came to denote the variable or current coordinates .

  8. 9 - Wikipedia

    en.wikipedia.org/wiki/9

    The sum of the digits of 35967930 is 3 + 5 + 9 + 6 + 7 + 9 + 3 + 0 = 42, and 35967930 − 42 = 35967888. The digital root of 35967888 is 3 + 5 + 9 + 6 + 7 + 8 + 8 + 8 = 54, 5 + 4 = 9. If dividing a number by the amount of 9s corresponding to its number of digits, the number is turned into a repeating decimal .

  9. Scrabble variants - Wikipedia

    en.wikipedia.org/wiki/Scrabble_variants

    When making a new word the root of the existing word must be changed - for example D could not be added to the word LIVE to make LIVED, but it could make DEVIL. All the letters in an existing word must be included in the new one, plus at least one more. When a new letter is turned over, the first person to say a valid word takes it.