One of the n encrypted files in a folder is a special file. K of these files are removed one at a time by an attacker who has access to the folder. Each choice has an equal chance of being any of the currently available files. What is the probability that the person will withdraw the special file? You must justify or explain how you arrived at your conclusion.

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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One of the n encrypted files in a folder is a special file. K of these files are removed one at a time by an attacker who has access to the folder. Each choice has an equal chance of being any of the currently available files. What is the probability that the person will withdraw the special file?
You must justify or explain how you arrived at your conclusion.

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