A local area network requires eight characters for a password. The first character must be a letter, but the remaining seven characters can be either a letter or a digit (0 through 9). Lower and uppercase letters are considered the same. Reptition of the

A local area network requires eight characters for a password. The first character must be a letter, but the remaining seven characters can either be a letter or a digit(0 through 9). Lower and uppercase letters are considered the same. Repetition of the characters is permitted. How many passwords are possible for the local area network? Show your work.