Short-Question

# What are the common factors of 15 20 and 30?

## What are the common factors of 15 20 and 30?

As you can see when you list out the factors of each number, 5 is the greatest number that 15, 20, and 30 divides into….For 15, 20, and 30 those factors look like this:

• Factors for 15: 1, 3, 5, and 15.
• Factors for 20: 1, 2, 4, 5, 10, and 20.
• Factors for 30: 1, 2, 3, 5, 6, 10, 15, and 30.

### What are the common factors of 12 15 and 30?

As you can see when you list out the factors of each number, 3 is the greatest number that 12, 15, and 30 divides into….For 12, 15, and 30 those factors look like this:

• Factors for 12: 1, 2, 3, 4, 6, and 12.
• Factors for 15: 1, 3, 5, and 15.
• Factors for 30: 1, 2, 3, 5, 6, 10, 15, and 30.

#### What is the LCM and GCF of 15 and 30?

What is the Relation Between LCM and GCF of 15, 30? The following equation can be used to express the relation between Least Common Multiple (LCM) and GCF of 15 and 30, i.e. GCF × LCM = 15 × 30.

Least Common Multiple of 15 and 30 with GCF Formula. The formula of LCM is LCM (a,b) = ( a × b) / GCF (a,b). We need to calculate greatest common factor 15 and 30, than apply into the LCM equation. GCF (15,30) = 15.

How do you calculate the greatest common factor?

To find the greatest common factor (GCF) between numbers, take each number and write it’s prime factorization. Then, identify the factors common to each number and multiply those common factors together.

What is the highest common factor?

The Highest Common Factor (H.C.F) of two (or more) numbers is the largest number that divides evenly into both numbers. In other words the H.C.F is the largest of all the common factors. The common factors or of 12 and 18 are 1, 2, 3 and 6.

## What is an example of greatest common factor?

The greatest common factor (GCF) of a set of numbers is the largest number that is a factor of all those numbers. For example, the GCF of the numbers 4 and 6 is 2 because 2 is the greatest number that’s a factor of both 4 and 6.