all of them have 16 numbers except for American Express...I'm not sure about that one but i think it has 15 numbers.
Crad Kilodney was born in 1948.
2 years
10
There are 16 digits on a credit card.
16 numbers.
16 digits.
It reads the card to see if the card is valid or not if tje crad is n ot valid it rejects the crad but if the crad is accepted the ouput 1 turns on and starts the system of withdrawing the money. This is a very basic answer. :(
how many numbers are on a visa card 16number of VISA
16 numbers
3
Credit card ID numbers have three (Discover, Visa, MasterCard) or four (American Express) digits.
by shineing a light