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11 February, 15:12

Why is the gcf of two numbers sometimes 1

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  1. 11 February, 15:16
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    The greatest common factor is sometimes one because that is the only thing that can go into it.
  2. 11 February, 15:19
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    Its because one of the numbers can be prime numbers, the greatest common factor of 12 and 13 it's 1 because 13 it's a prime number or because they don't have common prime factors. Prime numbers are the numbers who can be divided just by 1 and themselves.
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