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Are 45 and 65 relatively prime?

Roger Moore

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Donald Ward on August 11, 2019

No. Two numbers are "relatively prime" if they contain no common factors, that is to say, that have a greatest common factor (GCF) of 1. 45 = 3 x 3 x 5 65 = 5 x 13 and the GCD is the common factor of 5.


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