No. Even an example may inadverdantly belong to someone. Four groups of four numbers each. That's all we can tell you.
5
your mamma
tipically a credit no looks like 3245-4511-2345-8785
No, because you cannot have an card number. The indefinite article, an, is used before a word that begins with a vowel, not a consonant. So you can have "a card" but not "an card".
what???
The gulible will answer with their own card number.
5
your mamma
No I can't. Why?
there are 16 in groups of 4.
Three
I can give you... But be sure not to hold up there... Card Holder: DONT KNOW Card number: not known Secrity number: 235
MasterCard numbers always start with the number 5.
Send him a card with your number in it.
The sample space is each card in the deck.
tipically a credit no looks like 3245-4511-2345-8785
what???