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Computer Science
Cybersecurity
Passwords and Authentication
a computer password is required to be 9 characters long. how many passwords are possible if the password requires 3 letters followed by 6 digits 0-9 where no repetition of any letters or numbers are allowed
1 answer
26 * 25 * 24 * 10 * 9 * 8 * 7 * 6 * 5
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