here is the problem
The following problems require you to make some assumptions. Be sure to specify them.
What is the shortest the address on a typical letter could be, if it is to get to a unique human recipient? (Assume the permitted characters are A-Z, 0-9). Explain your assumptions and show your work. You will need a calculator that can do logarithms.
Please, help - I don't even understand what logs would have to do with this problem.