# What is the GCF of 15 and 24?

Greatest Common Factor of the numbers, 15 and 24 is the largest possible number which divides 15 and 24 exactly without any remainder.

## Answer: GCF of 15 and 24 is 3

Let us see how to find GCF of 15 and 24

## Method to find GCF of 15 and 24

- GCF of 15 and 24 by Common Factors
- Long Division

### Method 1: GCF(15, 24) by Listing the Common Factors

There are two common factors of 15 and 24, that are, 1 and 3

So, the greatest common factor of 15 and 24 is 3

### Method 2: GCF(15, 24) by Long Division

**Step 1: **Divide the largest number 24 by the smaller number15 and check the remainder.

**Step 2:** Make the remainder of the above step as the divisor and the divisor of the above step as the dividend and perform the long division again.

**Step 3:** Continue till you get the remainder as 0 and GCF(15, 24) will be the last divisor of the division process.

You can find the greatest common factor in any of the above methods but the solution will be the same.