There are 2 sets of numbers on a credit or charge card. The card number is usually 16 digits long and on the front of the card.The CVV number is usually on the back of the card and 3 digits long....
This question makes no sense. The credit card number is printed on the card in raised numbers across the front.
Imprinted on the front face of the card.
Embossed on the face of a credit card. You can also find it on your monthly credit card statement.
Some credit cards have letters. Others don't have. Visa for example have a letter V superimposed.