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Q: Common factors of 18 and 51 and 81?
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What are the common factors of 18 and 81?

The common factors of 18 and 81 are; 1, 3, and 9. The factors of 18 are; 1, 2, 3, 6, 9, and 18. The factors of 81 are 1, 3, 9, 27, and 81.


What are the common factors of 51 and 81?

1 and 3.


What are the common factors of 18 27 and 81?

The common factors of 27, 18, and 81 are 1, 3, and 9.


What is the greatest common factor of 18 and 81?

Factors of 18: 1 2 3 6 9 18 Factors of 81: 1 3 927 81 The GCF of 18 and 81 is 9.


What is the greatest common factor for 18 and 81?

The factors of 18 are 1, 2, 3, 6, 9, and 18. The factors of 81 are 1, 3, 9, 27, and 81. The common factors are 1, 3, and 9. Therefore, the greatest common factor is 9. You can also determine the greatest common factor from the prime factors. The prime factors of 18 are 2, 3, and 3. The prime factors of 81 are 3, 3, 3, and 3. The prime factors in common are 3 and 3, so the greatest common factor is 3 x 3 = 9.


What are the factors of 18 and 81?

The factors of 18 are 1,2,3,6,9, and 18. The factors of 81 are 1,3,9,27, and 81.


Common prime factors 18 81?

18 and 81 share only one prime factor: 3


What is the gcf of 81 75 51?

The factors of 51 are: 1, 3, 17, 51The factors of 75 are: 1, 3, 5, 15, 25, 75The factors of 81 are: 1, 3, 9, 27, 81The common factors are: 1, 3The Greatest Common Factor (GCF) is: 3


Common factors of 81 36?

The factors of 81 are 1, 3, 9, 27, and 81. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The common factors of 81 and 36 are 1, 3, and 9.


What are the common factors of 18 45 63 and 81?

1, 3 and 9


What is the greatest common factor for 18 51 and 81?

The greatest common factor is . You can figure this out by finding all of the factors of the smallest number, then, starting with the largest factor, seeing if it is a factor of all the numbers. The factors of 18 are 18, 9, 6, 3, 2, and 1. 18 is not a factor of 51 or 81 (you know quickly because it is an even number while 51 and 81 are odd), 9 isn't (because 5+1 does not = 9 or a multiple of 9), and 6 isn't for the same reason as 18. 3 is a factor of all three (you can tell quickly because 5+1 and 8+1 both add up to multiples of 3), making it the greatest common factor. While 1 is also a factor of all three numbers, it is not the greatest common factor because 3 is larger.


What is the gcf for 18 and 81?

The factors for 18 are 1, 2, 3, 6, 9, and 18. The factors for 81 are 1, 3, 9, 27, and 81. Therefore the GCF (Greatest Common Factor) is 9 since it is the greatest number they both share.