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There are 24 families living in the Willbrook Farms Development. Of these families 12 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 5 by H&R Block. (a) What is the probability of selecting a family that prepared their own taxes? (Round your answers to 3 decimal places.) (b) What is the probability of selecting two families both of which prepared their own taxes? (Round your answers to 3 decimal places.) (c) What is the probability of selecting three families, all of which prepared their own taxes? (Round your answers to 3 decimal places.) (d) What is the probability of selecting two families, neither of which had their taxes prepared by H&R Block? (Round your answers to 3 decimal places.)
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