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Mathematics, 20.04.2020 19:47 byers024
To gain access to his account, a customer using an automatic teller machine (ATM) must enter a four-digit code. If repetition of the same four digits is not allowed (for example 5555), how many possible combinations are there?
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Answers: 2
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To gain access to his account, a customer using an automatic teller machine (ATM) must enter a four-...
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