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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.
Wiki User
∙ 11y ago
Wiki User
∙ 8y agoThe GCF is 3.
Wiki User
∙ 8y agoThe GCF is 3.
Wiki User
∙ 11y agoThe answer's 9
Wiki User
∙ 9y agoThe GCF of 15 51 and 81 is 3
Wiki User
∙ 6y agoIt is: 3
Wiki User
∙ 14y ago3
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Greatest factor of 51 and 18?
The greatest common fator of 51 abd 18 is 3.
What are the greatest common factors of 102 and 51?
The greatest common factor is 51
What is the greatest common factor shared by 51 and 21?
What is the greatest common factor shared by 51 and 21?
What is the greatest common factor of 12 51 and 92?
Greatest common factor of 12 51 and 92 is 1.
What is the greatest common factor of 34 and 51 and 102?
The greatest common factor of 34, 51, and 102 is 17.
Greatest factor of 51 and 18?
The greatest common fator of 51 abd 18 is 3.
What is the greatest common factor of 18 and 51?
The greatest common factor of 18 and 51 is 3.18 ÷ 3 = 651 ÷ 3 = 17Method: One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 18 are 1, 2, 3, 6, 9, and 18.The factors of 51 are 1, 3, 17, and 51.The common factors are 1 and 3. Therefore, the greatest common factor is 3.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 18 are 2, 3, and 3.The prime factors of 51 are 3 and 17.The prime factors in common are a single 3, so the greatest common factor is 3.The greatest common factor of 51 and 18 is 3
What is the greatest common factor of 9and 18 and 51?
The GCF is 3.
The greatest common factor of 51 and 34?
The Greatest Common Factor of 51 and 34 is 17.
What is the greatest common factor of 62 and 51?
The greatest common factor of 62 and 51 is 1.
What is the greatest common factor of 51 and 35?
The greatest common factor of 51 , 35 = 1
What are the greatest common factors of 102 and 51?
The greatest common factor is 51
What is the greatest common factor of 51?
There is not a greatest common factor of 51 because there cannot be a greatest common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common.The factors of 51 are 1, 3, 17, and 51.Examples:The greatest common factor of 34 and 51 is 17.The greatest common factor of 51 and 90 is 3.The greatest common factor of 5 and 51 is 1.You need at least two numbers to find a GCF.
What is the greatest common factor shared by 51 and 21?
What is the greatest common factor shared by 51 and 21?
What is the greatest common factor of 39 48 and 51?
The Greatest Common Factor of 39, 48, 51: 3
What is the greatest common factor of 51 and 125?
Greatest common factor of 51 and 125 is 1.
What is the Greatest Common Factor of 51 and 67?
The Greatest Common Factor (GCF) is: 1
