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Mathematics, 22.01.2020 06:32 Kkampudiaa

The set s contains some real numbers, according to the following three rules. (i) 1 1 is in s. (ii) if a b is in s, where a b is written in lowest terms (that is, a and b have highest common factor 1), then b 2a is in s. (iii) if a b and c d are in s, where they are written in lowest terms, then a+c b+d is in s. these rules are exhaustive: if these rules do not imply that a number is in s, then that number is not in s. can you describe which numbers are in s?

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