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The answer is 1 because 7 is a Prime number which means that it's only factors are 1 and itself which is 7.
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That is just a rubbish answer. The key is not whether one of the numbers is prime but whether the numbers in the set are co-prime.
GCF(7, 42) = 7.
Although 7 is a prime and divides itself, it also divides 42.
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Related Questions
What is the GCF of 42 and 7?
Since 7 is a factor of 42, it is automatically the GCF.
What is the GCF Of 35 and 42?
The GCF of 42 and 35 is 7.factors of 42: 2,6,7factors of 35: 5,7
What is the greatest common factor of 7 and 42 and 70 42 and 70?
The GCF of 7, 42, and 70 is 7.The GCF is 7.
What is the GCF of35 and 42?
The GCF is 7.
GCF of 42 and 77?
The GCF is 7.
What is the GCF of 42 and 91?
The GCF is 7.
Find GCF of 35 and 42?
The GCF is 7.
What is the GCF of 42 and 112 and 105?
GCF of 42 and 112 and 105 is 7.
What is the GCF of 42 56 105?
The GCF is 7.
What is the gcf of 35 42 and 63?
The GCF is 7.
What is the gcf for 42 77 and 84?
The GCF is 7.
What is the gcf of 28 35 42?
The GCF is 7.
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