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27 August, 20:36

Why is the greatest common factor of 2 numbers sometimes 1

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  1. 27 August, 20:37
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    If the numbers are prime then the only factors are the numbers and 1.

    For example - the factors of 5 are 1 and 5 and the factors of 7 are 1 and 7 so they only share the number 1. That is the GCF of 5 and 7.
  2. 27 August, 20:56
    0
    The greatest common factor of two numbers, one of which is 1, will always be 1.
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