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

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

   The numbers on a credit card help identify the credit card network, the company that issued the card and the cardholder. Credit card numbers are either 15 or 16 digits, with each digit having its ...

3. Credit card information: The basics you need to know - AOL

   www.aol.com/finance/credit-card-information...

   Credit card number. Your credit card number is a 15- or 16-digit number that is usually embossed or printed on the front of your credit card toward the bottom, though it’s becoming increasingly ...

4. Luhn algorithm - Wikipedia

   en.wikipedia.org/wiki/Luhn_algorithm

   The check digit is computed as follows: Drop the check digit from the number (if it's already present). This leaves the payload. Start with the payload digits. Moving from right to left, double every second digit, starting from the last digit. If doubling a digit results in a value > 9, subtract 9 from it (or sum its digits).

5. Add, edit, or delete a payment method for AOL services

   help.aol.com/articles/update-your-payment-method

   If your card number has changed, you must add a new card. 1. Sign in to your My Account page. 2. Click My Wallet. 3. Click Payment Methods. 4. Click Add Credit or Debit Card. 5. Enter the new info. 6. Click Submit.

6. 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 ...

7. How to read your credit card statement - AOL

   www.aol.com/finance/read-credit-card-statement...

   If you receive your credit card statements in the mail, it includes a payment coupon for you to submit along with a check or money order. A handy way to avoid the mail while avoiding late payments ...