Now suppose a computer hacker tries to guess what your password is by testing all possible passwords and it takes his program one second to test 400 passwords. Let's assume that the hacker has a program that will check all possible passwords and that it is allowed to use as much time as it needs.
b) What is the maximum amount of time (in seconds) that it will take the hacker to discover your password? In other words, how long will it take the hacker to test all of the possible passwords.