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39 votes
39 votes
If the probability of an event is what is the probability of the event not happening?20/69Write your answer as a simplified fraction.

User John Slade
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1 Answer

12 votes
12 votes

If an event has a probability P of happening, then there is a probability of (1-P) of the event not happening.

In this case the probability of the event is p=20/69.

Then, the probability of the event not happening is:


P(\text{not happening})=1-p=1-(20)/(69)=(69-20)/(69)=(49)/(69)

Answer: the probability of the event not happening is 49/69.

User Nizzle
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