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 thetablet on his first try? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

Given Number of ways to have seven digit code from these 6 digits

Answered: Avery sets up a passcode on her tablet,…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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