The number 5 is the first digit of all account numbers associated with which major credit card?
MasterCard
Visa
American Express
Discover
Fact: Credit card numbers follow a global system called the Major Industry Identifier, where the first digit reveals the network or industry associated with the card. MasterCard numbers always begin with the digit 5, setting them apart from other major networks: Visa cards start with 4, American Express with 34 or 37, and Discover typically with 6. These identifiers help banks, merchants, and payment processors quickly determine the card network and routing system. This numbering system plays a key role in keeping the financial ecosystem organized.
Correct Answer: MasterCard