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Mathematics, 07.03.2020 03:14 KillerSteamcar
Bob discovers a box with 30 identical, used, rechargeable batteries in his attic.
Suppose each of them is equally likely have some charge in it, or to have run out of charge. What is the probability that:
a) All of them are out of charge?
b) 20% of them are out of charge?
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