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Omni-MATH / Let S be the set of positive integers. For any a and b in the set we have GCD(a,b)>1. For any a, b and c in the set we have GCD(a,b,c)=1. Is it possible that S has 2012 elements? [… · Discussion

Discussing Let S be the set of positive integers. For any a and b in the set we have GCD(a,b)>1. For any a, b and c in the set we have GCD(a,b,c)=1. Is it possible that S has 2012 elements? [… · Omni-MATH

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