GCF of 15 and 20 by Listing Common Factors

There are 2 common factors of 15 and 20, that are 1 and **5**. Therefore, the greatest common factor of 15 and 20 is 5.

Also, What is the GCF of 16 and 24?

GCF of 16 and 24 by Prime Factorization

As visible, 16 and 24 have common prime factors. Hence, the GCF of 16 and 24 is **2 × 2 × 2 = 8**.

Hereof, What is the GCF of 10 15 and 20?

As you can see when you list out the factors of each number, **5** is the greatest number that 10, 15, and 20 divides into.

Also to know What is the HCF of 15 and 30? There are 4 common factors of 15 and 30, that are 1, 3, 5, and 15. Therefore, the greatest common factor of 15 and 30 **is 15**.

What is the GCF of 17 and 51?

GCF of 17 and 51 by Listing Common Factors

There are 2 common factors of 17 and 51, that are 1 and 17. Therefore, the greatest common factor of 17 and 51 **is 17**.

**16 Related Questions Answers Found**

Table of Contents

**What is the GCF of 18 and 24?**

Correct answer:

18 and 24 share one 2 and one 3 in common. We multiply them to get the GCF, so 2 * 3 = **6** is the GCF of 18 and 24.

**What is the GCF of 18 and 27?**

GCF of 18 and 27 by Listing Common Factors

There are 3 common factors of 18 and 27, that are 1, 3, and **9**. Therefore, the greatest common factor of 18 and 27 is 9.

**What is the GCF of 18 and 30?**

GCF of 18 and 30 by Listing Common Factors

Therefore, the greatest common factor of 18 and 30 is **6**.

**What is the HCF of 5 10 and 15?**

⇒ Since **5** is the only common prime factor of 5, 10 and 15. Hence, HCF(5, 10, 15) = 5. ☛ What are Prime Numbers?

**What is the GCF of 36 24?**

The GCF of 24 and 36 is **12**.

**What is the GCF of 36 and 54?**

GCF of 36 and 54 by Listing Common Factors

There are 6 common factors of 36 and 54, that are 1, 2, 3, 6, 9, and **18**. Therefore, the greatest common factor of 36 and 54 is 18.

**What is the GCF of 15 and 3?**

What is the GCF of 3 and 15? The GCF of 3 and 15 is **3**.

**What is the GCF for 15 and 25?**

Answer: GCF of 15 and 25 is **5**.

**What is the HCF of 15?**

Factors of 15 (Fifteen) = 1, 3, 5 and 15. Factors of 35 (Thirty five) = 1, 5, 7 and 35. Therefore, common factor of 15 (Fifteen) and 35 (Thirty five) = **1 and 5**. Highest common factor (H.C.F) of 15 (Fifteen) and 35 (Thirty five) = 5.

**What is the GCF of 17 and 12?**

The GCF of 12 and 17 is **1**.

**What is the HCF of 15 and 51?**

The GCF of 15 and 51 is **3**.

**What is the GCF of 24 18 and 30?**

As you can see when you list out the factors of each number, **6** is the greatest number that 18, 24, and 30 divides into.

**What is the GCF of 16 and 18?**

GCF of 16 and 18 by Listing Common Factors

There are 2 common factors of 16 and 18, that are 1 and 2. Therefore, the greatest common factor of 16 and 18 is **2**.

**What is the GCF of 24 36 and 18?**

The greatest common factor of 18, 24, and 36 is **6**.

**What’s the GCF of 18 and 36?**

GCF of 18 and 36 by Prime Factorization

As visible, 18 and 36 have common prime factors. Hence, the GCF of 18 and 36 is **2 × 3 × 3 = 18**.

**What is the GCF of 15 and 18?**

Answer: GCF of 15 and 18 is **3**.

**What is the GCF of 15 and 30?**

There are 4 common factors of 15 and 30, that are 1, 3, 5, and 15. Therefore, the greatest common factor of 15 and 30 is **15**.

**What is the GCF of 18?**

The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9. The greatest common factor of 18 and 27 is **9**.

**What is the HCF of 5 and 15?**

There are 2 common factors of 5 and 15, that are 1 and 5. Therefore, the greatest common factor of 5 and 15 **is 5**.

**What is the HCF of 5 and 10?**

Prime factorization of 5 and 10 is (5) and (2 × 5) respectively. As visible, 5 and 10 have only one common prime factor i.e. 5. Hence, the HCF of 5 and 10 is **5**.