4 ms·
Except in practice, the vast majority of Amex users also have Visa/Mastercard just in case (e.g. Visa/Mastercard users are close to a superset of Amex users).
by argonaut 6y ago
Except in practice, the vast majority of Amex users also have Visa/Mastercard just in case (e.g. Visa/Mastercard users are close to a superset of Amex users).