HCF of 6 and 9 - Methods to Calculate HCF | Testbook.com

Last Updated on Jun 12, 2024
Download As PDF
IMPORTANT LINKS

When we talk about the HCF of 6 and 9 , the answer is 3 . The HCF is the largest number that can divide both 6 and 9 without leaving a remainder. The factors of 6 are 1, 2, 3, and 6, while the factors of 9 are 1, 3, and 9. There are three popular methods to determine the HCF of 6 and 9: listing common factors, prime factorisation, and long division.

Further Reading: Highest Common Factor

How is the HCF of 6 and 9 Calculated?

The HCF of 6 and 9 is 3, and there are various ways to arrive at this solution. The HCF of any two or more numbers is the greatest factor common to all of them.

UGC NET/SET Course Online by SuperTeachers: Complete Study Material, Live Classes & More

Get UGC NET/SET SuperCoaching @ just

₹25999 ₹11666

Your Total Savings ₹14333
Explore SuperCoaching

Methods to Calculate the HCF of 6 and 9

The three commonly used methods to calculate the HCF of 6 and 9 are as follows:

  • Prime Factorisation
  • Long Division
  • Listing Common Factors

Calculating HCF of 6 and 9 Using Prime Factorisation Method

The prime factorisation of 6 and 9 is as follows:

Prime factorisation of 6 = (2 × 3)

Prime factorisation of 9 = (3 × 3)

The common prime factor of 6 and 9 is 3.

Therefore, the HCF of 6 and 9 is 3.

HCF (6, 9) = 3

Calculating HCF of 6 and 9 Using Long Division Method

The HCF of 6 and 9 is the divisor we get when the remainder becomes 0 after repeatedly executing long division.

No further division can be done.

Therefore, HCF (6, 9) =3

Calculating HCF of 6 and 9 by Listing Common Factors

To find the HCF of 6 and 9 by listing the common factors, we list down the factors as follows:

Factors of 6: 1, 2, 3, 6

Factors of 9: 1, 3, 9

The common factors of 6 and 9 are 1 and 3. Hence, the highest common factor of 6 and 9 is 3.

Test Series
133.5k Students
NCERT XI-XII Physics Foundation Pack Mock Test
323 TOTAL TESTS | 3 Free Tests
  • 3 Live Test
  • 163 Class XI Chapter Tests
  • 157 Class XII Chapter Tests

Get Started

Example: Finding HCF of 6 and 9

Let's illustrate this with an example. If we want to find the highest number that can divide 6 and 9 without leaving a remainder, we are essentially looking for the HCF of 6 and 9.

Let's list the factors of 6 and 9:

Factors of 6 = 1, 2, 3, 6

Factors of 9 = 1, 3, 9

Hence, the HCF of 6 and 9 is 3.

More Articles for Maths

Frequently Asked Questions

The HCF of 6 and 9 is 3. To calculate the HCF of 6 and 9, we need to factor each number (factors of 6 = 1, 2, 3, 6; factors of 9 = 1, 3, 9) and choose the highest factor that exactly divides both 6 and 9, i.e. 3.

To find the HCF of 6, 9 using the long division method, 9 is divided by 6. The corresponding divisor (3) when remainder equals 0 is taken as HCF.

There are three commonly used methods to find the HCF of 6 and 9. They are: By Long Division, By Listing Common Factors, By Prime Factorisation.

To find the HCF of 6 and 9, we will find the prime factorization of the given numbers, i.e. 6 = 2 × 3; 9 = 3 × 3. Since 3 is the only common prime factor of 6 and 9, the HCF (6, 9) = 3.

The following equation can be used to express the relation between LCM (Least Common Multiple) and HCF of 6 and 9, i.e. HCF × LCM = 6 × 9 = 54.

Report An Error