In the olden days, computer file names were limited to 13 characters. They were case sensitive (A and a are considered distinct) and there were some other rules. Assuming that file names are limited to 13 characters, which are either digits or letters, that the letters are case sensitive, and that no file name can start with a number, how many possible file names are there?

Answer rating: 100% (QA)

The usable characters are these 26 capital letters 26 lower case letters and 10 digits Thats the 62 ... View the full answer