SOLUTION: I have to solve this question, but am not sure how to go about doing it. The probability it will rain in June is .22. Find the probability it will rain at least one day in June.

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Question 519101: I have to solve this question, but am not sure how to go about doing it. The probability it will rain in June is .22. Find the probability it will rain at least one day in June. If you could explain in detail the steps of how to solve this I would great appreciate it. I am not simply looking for the answer, but am looking to learn How to solve the answer. Thanks.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Answer is .22, because if it rains in June then it is assumed that at least one day will have rain.

However, if the question says that the probability that it will rain on any particular day in June is .22, then P(rain) is equal to 1 - P(no rain) = 1 - (.78)^30 = .99942. Pretty likely.