Question: A computer system uses passwords that are exactly seven characters, and each character is one of the 26 letters (az) or 10 integers (09). Uppercase

A computer system uses passwords that are exactly seven characters, and each character is one of the 26 letters (a–z) or 10 integers (0–9). Uppercase letters are not used.

(a) How many passwords are possible?

(b) If a password consists of exactly 6 letters and 1 number, how many passwords are possible?

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