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  2. Telephone numbers in Lebanon - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Lebanon

    01 : Beirut and its Metropolitan area 02 : No longer in use (was previously used to call Syria) 030 : Mobile operators - MIC2 (touch) 031 : Mobile operators - MIC1 (alfa)

  3. 411 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/411_(telephone_number)

    411 is a telephone number for local directory assistance in Canada and the United States. Until the early 1980s, 411 – and the related 113 number – were free to call in most jurisdictions. In the United States, the service is commonly known as "information", [1] although its official name is "directory assistance". [2]

  4. Operator assistance - Wikipedia

    en.wikipedia.org/wiki/Operator_assistance

    A third number call or third party call is an operator assisted telephone call that can be billed to the party other than the calling and called party. The operator calls the third number for the party to accept the charges before the call can proceed. Time and charges was a service that could be requested of an operator before a call began ...

  5. Telephone numbers in Kuwait - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Kuwait

    Number 41 was allocated for Virgin Mobile numbers (year 2022) Number 5 was added before all STC numbers; Number 6 was added before all Ooredoo Telecom - Formerly Wataniya Telecom numbers; Number 9 was added before all Zain numbers; All the three digit lines remained the same without any additional number e.g. 121, 107, 113, 112, etc.

  6. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

    www.aol.com/free-reverse-phone-lookup-8...

    There’s an easy way to find out: conduct a reverse phone lookup — for free. But is there a truly free reverse phone lookup? Yes — there are plenty of sites that offer free reverse phone lookups.

  7. Operator (That's Not the Way It Feels) - Wikipedia

    en.wikipedia.org/wiki/Operator_(That's_Not_the...

    Cash Box described the lyrics saying that "in James Taylor fashion, Jim Croce tries to track down his long lost lover with the help of the operator." [3] The song relates one side of a conversation with a telephone operator. The speaker is trying to find the phone number of his former lover, who has moved to Los Angeles with his former best friend.

  8. Quantization of the electromagnetic field - Wikipedia

    en.wikipedia.org/wiki/Quantization_of_the...

    is the number operator. When acting on a quantum mechanical photon number state, it returns the number of photons in mode (k, μ). This also holds when the number of photons in this mode is zero, then the number operator returns zero. To show the action of the number operator on a one-photon ket, we consider

  9. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Computable number: A real number whose digits can be computed by some algorithm. Period: A number which can be computed as the integral of some algebraic function over an algebraic domain. Definable number: A real number that can be defined uniquely using a first-order formula with one free variable in the language of set theory.