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Avery sets up a passcode on her tablet, which allows only seven-digit codes. She has heard that It's more secure if a digit is repeated in the passcode. A spy sneaks a look at Avery's tablet and sees her fingerprints on the screen over stx 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.

Avery sets up a passcode on her tablet, which allows only seven-digit codes. She has heard that It's more secure if a digit is repeated in the passcode. A spy sneaks a look at Avery's tablet and sees her fingerprints on the screen over stx 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.

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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Avery sets up a passcode on her tablet, which allows only seven-digit codes. She has heard that It's more secure if a digit is repeated in the passcode. A spy sneaks a look at Avery's tablet and sees her fingerprints on the screen over stx 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.
Transcribed Image Text:Avery sets up a passcode on her tablet, which allows only seven-digit codes. She has heard that It's more secure if a digit is repeated in the passcode. A spy sneaks a look at Avery's tablet and sees her fingerprints on the screen over stx 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.
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