How credit card numbers actually work
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YouTubeCard Genius
How credit card numbers actually work
Book your next Business Class flight with my credit card? The number is on the screen… but there’s a catch. 😅 The number shown is not a valid card number, and this reel is only to explain how credit card numbers are checked mathematically. Most people think a credit card number is just a random 16-digit number, but that’s not true ...
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