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One building has two elevators. It is known that the first of them is used 55% of the time, while the second the rest of

One building has two elevators. It is known that the first of them is used 55% of the time, while the second the rest of the time. By use, the first elevator has a failure chance of 8% and the second has a 5% chance of failure. If one day the alarm of one of the elevators sounds because it has failed, what is the probability that it was the first of the elevators?

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