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Mathematics, 21.11.2019 05:31 henryzx900

Ajunk box in your room contains eighteen old batteries, seven of which are totally dead. you start picking batteries one at a time and testing them. find the probability of each outcome. a) the first two you choose are both good. b) at least one of the first three works. c) the first four you pick all work. d) you have to pick five batteries to find one that works.

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