Mills Chavez
09/04/2023 · Senior High School
Problem 4 How many different passwords of length eight (repetition allowed) can one make such that: - The password is made out of big letters, small letters, numbers, and special characters. - There are 27 big letters, 27 small letters, 10 numbers ja 36 special characters available. - The password has to have at least one big letter, one number or one special character. (Any of these conditions suffices.)
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The total number of valid passwords is \( 10^{16} - 5764801 \).
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