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Enow which one. You first try one key a key. You repeat the process until the c Find the expression for the probability

Enow which one. You first try one key a key. You repeat the process until the c Find the expression for the probability

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Q1 Assume there are n keys and only one unlocks the door in front of you but you do not know which one. You first try one key and if it does not work you put it aside and try another key. You repeat the process until the door is unlocked. a) Find the expression for the probability that you will need at least m attempts. b) Now assume that you pick a key, try, and then return it to the table. The keys are then mixed randomly, and you repeat the process. Repeat part a).
Transcribed Image Text:Q1 Assume there are n keys and only one unlocks the door in front of you but you do not know which one. You first try one key and if it does not work you put it aside and try another key. You repeat the process until the door is unlocked. a) Find the expression for the probability that you will need at least m attempts. b) Now assume that you pick a key, try, and then return it to the table. The keys are then mixed randomly, and you repeat the process. Repeat part a).
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