- Thread starter iane1982
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Are you familiar with Venn diagram?

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Please tell us what you have learned about probability, so we can know what concepts to use in guiding you to a solution. Do you know about conditional probability, independence, and the use of "or" and "and" in probability, for example? One tool you might use is a tree diagram.

If you do know all these things, then think about this: P(rains and hits target, or doesn't rain and hits target).