Q: Common factors of 18 and 51 and 81?

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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

The common factors of 36 and 81 are: 1, 3, and 9

Prime: 13, 23, 31 Composite: 15, 18, 51, 66, 81

Factors of 81 are [3 3 3 3] Factors of 75 are [3 5 5] Common factors [3] ■

1

Related questions

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.

1 and 3.

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

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

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.

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

18 and 81 share only one prime factor: 3

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

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.

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.

1, 3 and 9

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.