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Problem 7. Prove that {0,1,2} x N is countable by explicitly constructing a bijective function between {0,1,2} x N and N. Be sure to prove

Problem 7. Prove that {0,1,2} x N is countable by explicitly constructing a bijective function between {0,1,2} x N and N. Be sure to prove that your chosen function is bijective

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