After getting a wireless router for her home, Theresa creates a password consisting of two characters. She randomly selects a letter of the alphabet and then randomly chooses a digit (0,1,2,3,1,5,6,7,8,9) for the second character.

1. What is the probability that her password is “ED”?
2. What is the probability that her password is “K9”? Preview Question 6 Part 2 of 3  
3. Would the password in (b) be effective as a deterrent against someone trying to gain access to her computer? Please explain your response.