Joined
Last Seen
0 Reputation Points
Unknown Quality Score
No one has voted on any posts yet. Votes from other community members are used to determine a member's reputation amongst their peers.
0 Endorsements
Ranked #72.7K
|
(Credit card number validation) Credit card numbers follow certain patterns. A credit card number must have between 14 and 16 digits. It must start with: • 4 for Visa cards • 5 for Master cards • 37 for American Express cards. • 6 for Discover cards In 1954,Hans Luhn of … 
|