Avery sets up a passcode on her smartphone, which allows only five-digit codes. A spy sneaks a look at Avery's smartphone and sees her fingerprints on the screen over five numbers. What is the probability the spy is able to unlock the smartphone on his first try? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
Added by Diego F.
Step 1
Since there are 5 options for the first digit, 4 options for the second digit, 3 options for the third digit, 2 options for the fourth digit, and 1 option for the fifth digit, we multiply these options together to get the total number of possible passcodes: 5 x 4 Show more…
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