Highest Common Factor of 720, 882, 643 using Euclid's algorithm

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

HCF Calculator using the Euclid Division Algorithm helps you to find the Highest common factor (HCF) easily for 720, 882, 643 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 720, 882, 643 is 1 the largest number which exactly divides all the numbers i.e. where the remainder is zero. Let us get into the working of this example.

Consider we have numbers 720, 882, 643 and we need to find the HCF of these numbers. To do so, we need to choose the largest integer first and then as per Euclid's Division Lemma a = bq + r where 0 ≤ r ≤ b

Highest common factor (HCF) of 720, 882, 643 is 1.

HCF(720, 882, 643) = 1

HCF of 720, 882, 643 using Euclid's algorithm

Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.

HCF of:

Highest common factor (HCF) of 720, 882, 643 is 1.

Highest Common Factor of 720,882,643 using Euclid's algorithm

Highest Common Factor of 720,882,643 is 1

Step 1: Since 882 > 720, we apply the division lemma to 882 and 720, to get

882 = 720 x 1 + 162

Step 2: Since the reminder 720 ≠ 0, we apply division lemma to 162 and 720, to get

720 = 162 x 4 + 72

Step 3: We consider the new divisor 162 and the new remainder 72, and apply the division lemma to get

162 = 72 x 2 + 18

We consider the new divisor 72 and the new remainder 18, and apply the division lemma to get

72 = 18 x 4 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 18, the HCF of 720 and 882 is 18

Notice that 18 = HCF(72,18) = HCF(162,72) = HCF(720,162) = HCF(882,720) .

We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma

Step 1: Since 643 > 18, we apply the division lemma to 643 and 18, to get

643 = 18 x 35 + 13

Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 13 and 18, to get

18 = 13 x 1 + 5

Step 3: We consider the new divisor 13 and the new remainder 5, and apply the division lemma to get

13 = 5 x 2 + 3

We consider the new divisor 5 and the new remainder 3,and apply the division lemma to get

5 = 3 x 1 + 2

We consider the new divisor 3 and the new remainder 2,and apply the division lemma to get

3 = 2 x 1 + 1

We consider the new divisor 2 and the new remainder 1,and apply the division lemma to get

2 = 1 x 2 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 18 and 643 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(13,5) = HCF(18,13) = HCF(643,18) .

HCF using Euclid's Algorithm Calculation Examples

Here are some samples of HCF using Euclid's Algorithm calculations.

Frequently Asked Questions on HCF of 720, 882, 643 using Euclid's Algorithm

1. What is the Euclid division algorithm?

Answer: Euclid's Division Algorithm is a technique to compute the Highest Common Factor (HCF) of given positive integers.

2. what is the HCF of 720, 882, 643?

Answer: HCF of 720, 882, 643 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 720, 882, 643 using Euclid's Algorithm?

Answer: For arbitrary numbers 720, 882, 643 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.