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Wanda is working on her predictions for the next few days. She calculates that there is a 20% chance of rain on Monday and a 20% chance onf rain on Tuesday. If she is correct, what is the probability that it will rain on at least one of these days?

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Answer:

the answer is that 20% plus 20% equals to 40% and the probability it will rain on at least one of those days is 40% or 2/5

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