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  2. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    There is an international format for recording a telephone number containing the country code, settlement code and telephone number, and the national format containing the settlement code and telephone number. To record Ukrainian telephone numbers, telephone codes for settlements do not have an initial zero, long-distance prefix: 0.

  3. Spreadsheet - Wikipedia

    en.wikipedia.org/wiki/Spreadsheet

    In 2006 Google launched a beta release spreadsheet web application, this is currently known as Google Sheets and one of the applications provided in Google Drive. [16] A spreadsheet consists of a table of cells arranged into rows and columns and referred to by the X and Y locations. X locations, the columns, are normally represented by letters ...

  4. Google Sheets - Wikipedia

    en.wikipedia.org/wiki/Google_Sheets

    Google Sheets is a spreadsheet application and part of the free, web-based Google Docs Editors suite offered by Google. Google Sheets is available as a web application; a mobile app for: Android, iOS, and as a desktop application on Google's ChromeOS. The app is compatible with Microsoft Excel file formats. [5]

  5. E.123 - Wikipedia

    en.wikipedia.org/wiki/E.123

    The non-dialable PBX (private branch exchange) extension number should be separated by words "extension" or "ext." in the national language after the phone number. When the PBX is capable of direct inward dialing, the extension number should be written directly after the phone number, without using any distinct symbols. If there is a need to ...

  6. E.161 - Wikipedia

    en.wikipedia.org/wiki/E.161

    Using alphabetic characters (e.g. as a mnemonic) in a personal identification number. [2] Keypads are specified both in the common 4 × 3 and several variations, such as 6 × 2 and 2 × 5. E.161 also specifies the dimensions and characteristics of the asterisk and square, referred to in the standard as the 'star' and 'square' keys, respectively.

  7. Telephone number mapping - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_mapping

    The most prominent facility for telephone number mapping is the E.164 number to URI mapping (ENUM) standard. It uses special DNS record types to translate a telephone number into a Uniform Resource Identifier (URI) or IP address that can be used in Internet communications.

  8. Well-formed formula - Wikipedia

    en.wikipedia.org/wiki/Well-formed_formula

    A closed formula, also ground formula or sentence, is a formula in which there are no free occurrences of any variable. If A is a formula of a first-order language in which the variables v 1, …, v n have free occurrences, then A preceded by ∀v 1 ⋯ ∀v n is a universal closure of A.

  9. Telephone numbers in Saudi Arabia - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Saudi...

    The country's country calling code is +966. Saudi Arabia's numbering plan is the following: [1] 011 XXX XXXX - Riyadh & the greater central region; 012 XXX XXXX - Western region, includes Makkah, Jeddah, Taif, Rabigh