amila sets up a passcode on her tablet, which allows only four-digit codes. She has heard that it's more secure if a digit is repeated in the passcode. A spy sneaks a look at Camila's tablet and sees her fingerprints on the screen over three numbers. What is the probability the spy is able to unlock the tablet on his first try? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.