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Help with a question regarding congruence modulo n
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im confused about part c in the second image, i dont know how to approach the question.
it seems to me that when n = 3 the function is injective, and that it doesn't fail to be injective until n = 6. The first image in the imgur album has the table I constructed as per part a. Did I make a mistake there? Have I misunderstood the function?
thanks in advance.
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