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Subjects>Math>Basic Math

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

Anonymous

∙ 9y ago

Updated: 9/28/2022

The two that are relatively prime.

Wiki User

∙ 9y ago

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

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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.

How can you find the gcf of two numbers without knowing the factors?

If one of the numbers is a multiple of the other, the smaller number is the GCF. If the two numbers are prime numbers, the GCF is 1. If the numbers are consecutive, the GCF is 1. If the numbers are consecutive even numbers, the GCF is 2.

What is the gcf of all composite numbers under 100?

The GCF of all the composite numbers under 100 is 1. For e.g 4 & 9 are composite numbers & their GCF is 1, so if we take other composite numbers along with 4 & 9 the GCF will be 1.

What is the GCF of 27 and 64?

The GCF is: 1.

What is the GCF of 2 different prime numbers?

The GCF is 1.

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