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PROBLEM 3 A car dealership sells cars that were made in 2015 through 2020. Let the cars for sale be the domain of a relation

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PROBLEM 3 A car dealership sells cars that were made in 2015 through 2020. Let the cars for sale be the domain of a relation R where two cars are related if they were made in the same year. (a) Prove that this relation is an equivalence relation. (b) Describe the partition defined by the equivalence classes

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