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Repeated event

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Repeated event diagram
calc
This calc finds the probability of something happening many times, by raising the one-time probability to the power of the number of repeated ocurrences.
Chance of event happening
Number of times to happen

Total chance
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notes
In order to find the probability of many events all happening, it is necessary to multiply their probabilities together. Mathematically, this progression gives an exponential decay curve.
CalcTool's unit menu allows you to enter the probability as a number, a ratio, or a percentage, as is convenient.