In addition, you can determine the type of credit card by examining the initial digits and the length of the number. ... FOUR MAJOR CREDIT CARDS Credit Card Prefix Digits Total Digits MasterCard 51-55 16 Visa 4 13 or 16 American Express 34 or 37 15 Discover 6011 16 mm fla. Note. Validity, as used here, means whether the credit card number itself is a valid number as determined by the followinganbsp;...
|Title||:||Excel 2007 Formulas|
|Publisher||:||John Wiley & Sons - 2011-07-05|