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OpenStudy (anonymous):
Five light bulbs sit in a row, all connected to a battery. If some lights are turned on and off, how many possible ways are there for the lights to be on or off?
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OpenStudy (amorfide):
i'm going to assume statistics and that this is permutations so my answer would be 5! as order does not matter so the answer is 120 different ways but i'm bad at statistics so i'm sorry if i'm wrong.
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