'American Express Card numbers start with 3; MasterCard numbers, with this digit'
5
A NUMBER FROM 1 TO 10: American Express Card numbers start with 3; MasterCard numbers, with this digit
American Express Card numbers start with 3; MasterCard numbers, with this digit
American Express Card numbers start with 3; MasterCard numbers, with this digit
A NUMBER FROM 1 TO 10
5
A NUMBER FROM 1 TO 10