answersLogoWhite

0


Best Answer

You write down all of both number's factors and find the biggest number that they share.

or

Example: 30 and 42

Factor them.

2 x 3 x 5 = 30

2 x 3 x 7 = 42

Select the common factors.

2 x 3 = 6, the GCF

User Avatar

Wiki User

9y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

8y ago

Example: 30 and 42

Factor them.

2 x 3 x 5 = 30

2 x 3 x 7 = 42

Select the common factors.

2 x 3 = 6, the GCF

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How can you find the greatest common factor of two number?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Movies & Television

What is the greatest common factor of 1440?

There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


What is the greatest common factor of 196 and 1078?

196: 2-2-2-2-11 1078: 2-7-7-11 Greatest common factor: 22 Method(s) used: # The method to find the greatest common factor of numbers is to find the prime factorizations of each one, select all matching prime factors, and then multiply. # An alternative method is to find all of the factors of each, and then select the greatest number that appears in each list. # The final method only applies to some numbers; if one of the number is a factor of the other, then that number is the greatest common factor. This is because all numbers are factors of themselves, and that is their greatest factor. If it is also a factor of the other number, then it is definitely the greatest common factor.


What are the numbers for the greatest common factor of 4?

You need at least two numbers to find a GCF. 8 and 12 have a GCF of 4.


What is the greatest common factor of 172?

You need at least two numbers to find a greatest COMMONFactor.The greatest COMMON factor for 171 will depend upon the other number(s) with which it has COMMON factors, but it WILL be one of the factors of 171, namely one of: 1, 3, 9, 19, 57, 171


What is the greatest common factor of45 and 75?

There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.

Related questions

What are the common factors and greatest common factor of 119?

There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


What is the greatest common factor of 96?

There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


What is the greatest common factor of a number?

There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


What is the greatest common factor 42 a?

You need at least two numbers to find a GCF.


What are the greatest common factors of 62?

There are no common or greatest common factor(s) of just one number. In order to find the common or greatest common factor(s) you need two or more numbers.


What is the greatest common factor of 14?

You need at least two numbers to find a GCF.You need at least two numbers to find a GCF.


What are the common factors and greatest common factor of 49?

The factors of 49 are 1, 7, and 49. The Greatest common factor is the biggest number that is a factor of two or more given numbers. But you provided only one number. We need at least two numbers to find the greatest common factor.


What is the greatest common factor of 35?

There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


What is the greatest common factor of 72?

Well, isn't that just a happy little question! The greatest common factor of 72 is 36. You see, the greatest common factor is the largest number that can evenly divide into all the numbers you're looking at, and 36 fits that bill perfectly for 72. Just imagine those numbers getting along so well, creating a beautiful harmony together.


How do you find the greatest common factor of a number?

There's no such thing as the greatest common factor of "a number". "Common" means "same for both". There can't possibly be anything 'common' until you have at least two separate numbers.


What is the greatest common factor of 84?

It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question.If you meant 8 and 4, then the greatest common factor is 4.You need at least two numbers to find a GCF.


Greatest Common Factor of 275?

"Greatest common factor" and "least common multiple" only give useful information for more than one number. The greatest common factor of any number would be the same number - in this case, 275.