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The ones that are relatively prime, or co-prime.

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Q: Which of the pairs have gcf of 1?
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Related questions

Which number pairs have the gcf of 1?

Co-prime numbers


What are three pairs of gcf of 16?

The factor pairs (not the GCF) of 16 are (16,1)(8,2)(4,4)


Which of the following pairs of numbers has a GCF of 1?

The two that are relatively prime.


What is the greatest common factor of 54 and 55?

The GCF is 1. Anytime there are two consecutive integers, their GCF will be 1.


What is the GCF pairs of 4 and 6?

There can be only one GCF, not a pair. GCF(4, 6) = 2


What are two pairs of numbers with the GCF of 4?

(4,8) and (8,12) both have a GCF of 4.


What are 2 pairs of numbers that make a gcf with 12?

The gcf of 24 and 36 is 12


What number has the GCF and LCM the same?

The GCF and LCM of 10 and 10 is 10.


What do mathematicians call pairs of numbers whose GCF is one?

prime. * * * * * WRONG! They are coprime, not prime. GCF(8, 9) is 1 but neither 8 nor 9 is a prime.


What pairS of numbers have in common with 4 GCF?

4 and any multiple of 4 have a GCF of 4.


What pairs of numbers has a GCF of 1 30 and 70 24 and 44 12 and 30 16 and 21.?

16 and 21


Which pair of numbers has a greatest common factor of 1?

Any two prime numbers have a greatest common factor of 1. Examples: The GCF of 5 and 19 is 1. The GCF of 3 and 7 is 1. The GCF of 23 and 29 is 1. A prime number and any other number that is not a multiple of it have a greatest common factor of 1. Examples: The GCF of 2 and 9 is 1. The GCF of 7 and 16 is 1. The GCF of 13 and 60 is 1. Other pairs of numbers without any prime factors in common also have a greatest common factor of 1. Examples: The GCF of 4 and 9 is 1. The GCF of 21 and 25 is 1. The GCF of 72 and 77 is 1.