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  2. Health maintenance organization - Wikipedia

    en.wikipedia.org/.../Health_maintenance_organization

    In the United States, a health maintenance organization (HMO) is a medical insurance group that provides health services for a fixed annual fee. [1] It is an organization that provides or arranges managed care for health insurance , self-funded health care benefit plans, individuals, and other entities, acting as a liaison with health care ...

  3. Identify legitimate AOL websites, requests, and communications

    help.aol.com/articles/identify-legitimate-aol...

    • Fake email addresses - Malicious actors sometimes send from email addresses made to look like an official email address but in fact is missing a letter(s), misspelled, replaces a letter with a lookalike number (e.g. “O” and “0”), or originates from free email services that would not be used for official communications.

  4. How to identify a scam call before you're taken ... - AOL

    www.aol.com/2019-09-19-how-to-identify-a-scam...

    809 scam. If you receive a call from a number with an 809 area code, it might appear to be coming from the United States, but it’s not. ... the real police will never ask you to pay a fine by ...

  5. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    "A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical system." [1]: 38 The term is not equivalent to radix, as it applies to all numerical notation systems (not just positional ones with a radix) and most systems of spoken numbers. [1]

  6. Real number - Wikipedia

    en.wikipedia.org/wiki/Real_number

    The real numbers can be generalized and extended in several different directions: The complex numbers contain solutions to all polynomial equations and hence are an algebraically closed field unlike the real numbers. However, the complex numbers are not an ordered field. The affinely extended real number system adds two elements +∞ and −∞.

  7. What You Need to Know About Phone Scams - AOL

    www.aol.com/know-phone-scams-180248742.html

    By educating yourself, taking steps to protect your information and using scam protection tools like T-Mobile’s Scam Shield, you can take the first step to reduce the possibility of being scammed.

  8. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

    www.aol.com/finance/19-dangerous-scam-phone...

    If it’s a common scam number, you’ll probably find reports from people who have answered. 3 Common Types of Scam Calls. Several different types of phone scams exist. Since there is no limit to ...

  9. Use AOL Certified Mail to confirm legitimate AOL emails

    help.aol.com/articles/what-is-aol-certified-mail

    AOL may send you emails from time to time about products or features we think you'd be interested in. If you're ever concerned about the legitimacy of these emails, just check to see if there's a green "AOL Certified Mail" icon beside the sender name.