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HCF of 6, 8 and 12

HCF of 6, 8 and 12 is the largest possible number that divides 6, 8 and 12 exactly without any remainder. The factors of 6, 8 and 12 are (1, 2, 3, 6), (1, 2, 4, 8) and (1, 2, 3, 4, 6, 12) respectively. There are 3 commonly used methods to find the HCF of 6, 8 and 12 - prime factorization, Euclidean algorithm, and long division.

1.	HCF of 6, 8 and 12
2.	List of Methods
3.	Solved Examples
4.	FAQs

What is HCF of 6, 8 and 12?

Answer: HCF of 6, 8 and 12 is 2.

Explanation:

The HCF of three non-zero integers, x(6), y(8) and z(12), is the highest positive integer m(2) that divides x(6), y(8) and z(12) without any remainder.

Methods to Find HCF of 6, 8 and 12

Let's look at the different methods for finding the HCF of 6, 8 and 12.

Listing Common Factors
Using Euclid's Algorithm
Prime Factorization Method

HCF of 6, 8 and 12 by Listing Common Factors

Factors of 6: 1, 2, 3, 6
Factors of 8: 1, 2, 4, 8
Factors of 12: 1, 2, 3, 4, 6, 12

There are 2 common factors of 6, 8 and 12, that are 1 and 2. Therefore, the highest common factor of 6, 8 and 12 is 2.

HCF of 6, 8 and 12 by Euclidean Algorithm

As per the Euclidean Algorithm, HCF(X, Y) = HCF(Y, X mod Y)
where X > Y and mod is the modulo operator.

HCF(6, 8, 12) = HCF(HCF(6, 8), 12)

HCF(8, 6) = HCF(6, 8 mod 6) = HCF(6, 2)
HCF(6, 2) = HCF(2, 6 mod 2) = HCF(2, 0)
HCF(2, 0) = 2 (∵ HCF(X, 0) = |X|, where X ≠ 0)

Steps for HCF(2, 12)

HCF(12, 2) = HCF(2, 12 mod 2) = HCF(2, 0)
HCF(2, 0) = 2 (∵ HCF(X, 0) = |X|, where X ≠ 0)

Therefore, the value of HCF of 6, 8 and 12 is 2.

HCF of 6, 8 and 12 by Prime Factorization

Prime factorization of 6, 8 and 12 is (2 × 3), (2 × 2 × 2) and (2 × 2 × 3) respectively. As visible, 6, 8 and 12 have only one common prime factor i.e. 2. Hence, the HCF of 6, 8 and 12 is 2.

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HCF of 6, 8 and 12 Examples

Example 1: Find the highest number that divides 6, 8, and 12 completely.

Solution:

The highest number that divides 6, 8, and 12 exactly is their highest common factor.
- Factors of 6 = 1, 2, 3, 6
- Factors of 8 = 1, 2, 4, 8
- Factors of 12 = 1, 2, 3, 4, 6, 12
The HCF of 6, 8, and 12 is 2.
∴ The highest number that divides 6, 8, and 12 is 2.
Example 2: Calculate the HCF of 6, 8, and 12 using LCM of the given numbers.

Solution:

Prime factorization of 6, 8 and 12 is given as,
- 6 = 2 × 3
- 8 = 2 × 2 × 2
- 12 = 2 × 2 × 3
LCM(6, 8) = 24, LCM(8, 12) = 24, LCM(12, 6) = 12, LCM(6, 8, 12) = 24
⇒ HCF(6, 8, 12) = [(6 × 8 × 12) × LCM(6, 8, 12)]/[LCM(6, 8) × LCM (8, 12) × LCM(12, 6)]
⇒ HCF(6, 8, 12) = (576 × 24)/(24 × 24 × 12)
⇒ HCF(6, 8, 12) = 2.
Therefore, the HCF of 6, 8 and 12 is 2.
Example 3: Verify the relation between the LCM and HCF of 6, 8 and 12.

Solution:

The relation between the LCM and HCF of 6, 8 and 12 is given as, HCF(6, 8, 12) = [(6 × 8 × 12) × LCM(6, 8, 12)]/[LCM(6, 8) × LCM (8, 12) × LCM(6, 12)]
⇒ Prime factorization of 6, 8 and 12:
- 6 = 2 × 3
- 8 = 2 × 2 × 2
- 12 = 2 × 2 × 3
∴ LCM of (6, 8), (8, 12), (6, 12), and (6, 8, 12) is 24, 24, 12, and 24 respectively.
Now, LHS = HCF(6, 8, 12) = 2.
And, RHS = [(6 × 8 × 12) × LCM(6, 8, 12)]/[LCM(6, 8) × LCM (8, 12) × LCM(6, 12)] = [(576) × 24]/[24 × 24 × 12]
LHS = RHS = 2.
Hence verified.

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FAQs on HCF of 6, 8 and 12

What is the HCF of 6, 8 and 12?

The HCF of 6, 8 and 12 is 2. To calculate the HCF (Highest Common Factor) of 6, 8 and 12, we need to factor each number (factors of 6 = 1, 2, 3, 6; factors of 8 = 1, 2, 4, 8; factors of 12 = 1, 2, 3, 4, 6, 12) and choose the highest factor that exactly divides 6, 8 and 12, i.e., 2.

What is the Relation Between LCM and HCF of 6, 8 and 12?

The following equation can be used to express the relation between LCM (Least Common Multiple) and HCF of 6, 8 and 12, i.e. HCF(6, 8, 12) = [(6 × 8 × 12) × LCM(6, 8, 12)]/[LCM(6, 8) × LCM (8, 12) × LCM(6, 12)].
☛ Highest Common Factor Calculator

What are the Methods to Find HCF of 6, 8 and 12?

There are three commonly used methods to find the HCF of 6, 8 and 12.

By Long Division
By Prime Factorization
By Euclidean Algorithm

Which of the following is HCF of 6, 8 and 12? 2, 55, 18, 57, 16

HCF of 6, 8, 12 will be the number that divides 6, 8, and 12 without leaving any remainder. The only number that satisfies the given condition is 2.

How to Find the HCF of 6, 8 and 12 by Prime Factorization?

To find the HCF of 6, 8 and 12, we will find the prime factorization of given numbers, i.e. 6 = 2 × 3; 8 = 2 × 2 × 2; 12 = 2 × 2 × 3.
⇒ Since 2 is the only common prime factor of 6, 8 and 12. Hence, HCF(6, 8, 12) = 2.
☛ What is a Prime Number?

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