Question: Each character in a password is either a digit [0 9] or lowercase letter [a z]. How many valid passwords are there with the given

Each character in a password is either a digit [0 9] or lowercase letter [a z]. How many valid passwords are there with the given restriction(s)? Length is 12. No character repeats. Starts with: g7 Ex: P(1 1 , 4) * P(4, 3) Write permutations as: P(n, k)

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