There are 10,000 possible combinations that the digits 0-9 can be arranged to form a 4-digit pin code. Out of these ten thousand codes, which is the least commonly used? Which of these pin codes is the least predictable? Which of these pin codes is the most predictable? If you were given the task of trying to crack a random credit card by repeatedly trying PIN codes, what order should you try guessing to maximize your chances of selecting the correct number in the shortest time? If you had to make predication about what the least commonly used 4-digit PIN is, what would be your guess?
All Credit Card PIN Numbers in the World Leaked
