Question

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Answer 1

Greatest common factor (GCF) of 25 and 39 is 1. We will now calculate the prime factors of 25 and 39, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25 and 39...

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Answer 2

39 = 1 x 3 x 13

25 = 1 x 5 x 5

The highest common factor will be :-

1 (As they are the only common factor)