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  2. What do the numbers on your credit card mean? - AOL

    www.aol.com/finance/numbers-credit-card-mean...

    First off, you should know that credit cards that operate on the Discover, Mastercard and Visa networks are 16 digits long, whereas American Express credit cards have 15-digit numbers. The series ...

  3. Payment card number - Wikipedia

    en.wikipedia.org/wiki/Payment_card_number

    Payment card numbers are composed of 8 to 19 digits, [1] The leading six or eight digits are the issuer identification number (IIN) sometimes referred to as the bank identification number (BIN). [ 2 ] : 33 [ 3 ] The remaining numbers, except the last digit, are the individual account identification number.

  4. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  5. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    The card security code is located on the back of Mastercard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip On American Express cards, the card security code is a printed, not embossed, group of four digits on the front towards the right

  6. How to do a credit card balance transfer - AOL

    www.aol.com/finance/credit-card-balance-transfer...

    2. Apply for a balance transfer card. You can apply for a balance transfer card online in a matter of minutes. To apply, you’ll need to provide basic personal and financial data, such as your ...

  7. Discover Card - Wikipedia

    en.wikipedia.org/wiki/Discover_Card

    The slogan for the mall was "Where Discover Card is the Smart Choice". It was the first shopping mall to have granted naming rights to interested companies. [31] [32] Since 2008, Discover has been the official credit-card partner of the National Hockey League. As part of this deal, Discover offers team- and league-branded credit cards as well ...

  8. Pros and cons of a balance transfer - AOL

    www.aol.com/finance/pros-cons-balance-transfer...

    To ensure you pay off the balance before the intro period ends, make a plan using Bankrate’s credit card balance transfer calculator to determine the monthly payment amount that will help you ...

  9. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    For instance, the UPC-A barcode for a box of tissues is "036000241457". The last digit is the check digit "7", and if the other numbers are correct then the check digit calculation must produce 7. Add the odd number digits: 0+6+0+2+1+5 = 14. Multiply the result by 3: 14 × 3 = 42. Add the even number digits: 3+0+0+4+4 = 11.