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  2. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    The check digit is calculated by (()), where s is the sum from step 3. This is the smallest number (possibly zero) that must be added to s {\displaystyle s} to make a multiple of 10. Other valid formulas giving the same value are 9 − ( ( s + 9 ) mod 1 0 ) {\displaystyle 9-((s+9){\bmod {1}}0)} , ( 10 − s ) mod 1 0 {\displaystyle (10-s){\bmod ...

  3. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    A payment card number, primary account number (PAN), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards. In some situations the card number is referred to as a bank card number. The card number is primarily a card ...

  4. Want to Decode Your Credit Card Number? Check Out This ... - AOL

    www.aol.com/2011/02/11/want-to-decode-your...

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  5. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Use of a user-defined function sq(x) in Microsoft Excel. The named variables x & y are identified in the Name Manager. The function sq is introduced using the Visual Basic editor supplied with Excel. Subroutine in Excel calculates the square of named column variable x read from the spreadsheet, and writes it into the named column variable y.

  6. Adidas brings its Yeezy reservation app to some European cities

    www.aol.com/news/2016-06-02-adidas-confirmed...

    Today, following weeks of speculation, Adidas made the release date for Kanye West's new sneaker official: June 11th. In preparation for that, the company has updated its Confirmed app with a new ...

  7. Is it safe to give an app my credit card information? - AOL

    www.aol.com/finance/safe-app-credit-card...

    Bankrate’s take: When it comes to linking your accounts to a budgeting app, you should trust your instincts. If an app doesn’t look or feel secure, you shouldn’t give it your information ...

  8. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    There are several types of security codes and PVV (all generated from DES key in the bank in HSM modules using PAN, expiration date and service code): . The first code, 3 numbers, called CVC1 or CVV1, is encoded on track one and two of the magnetic stripe of the card and used for card present transactions, with signature (second track also contains pin verification value, PVV, but now it is ...

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