A box containş 4 bad and 6 good tubes. The tubes are checked by drawing a tube at random, testing and repeating the process until all 4 bad tubes are located. What is the probability that the fourth bad tube will be located (i) on the fifth test (ii) on the tenth test ?

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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A box containş 4 bad and 6 good tubes. The tubes are checked by drawing a tube
at random, testing and repeating the process until all 4 bad tubes are located. What
is the probability that the fourth bad tube will be located (i) on the fifth test (ii) on
the tenth test ?
Transcribed Image Text:A box containş 4 bad and 6 good tubes. The tubes are checked by drawing a tube at random, testing and repeating the process until all 4 bad tubes are located. What is the probability that the fourth bad tube will be located (i) on the fifth test (ii) on the tenth test ?
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