Question

A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 5 digits long, and that each digit could be a number between 0 and 4. Assume that the hacker makes random guesses. What is the probability that the hacker guesses the password on his first try?

Answer 1

He might have used Charles?  Or he has hacked before, and is experienced with hacking.