Highest Common Factor of 855, 655, 815 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 855, 655, 815 i.e. 5 the largest integer that leaves a remainder zero for all numbers.

HCF of 855, 655, 815 is 5 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 855, 655, 815 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 855, 655, 815 is 5.

HCF(855, 655, 815) = 5

HCF of 855, 655, 815 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 855, 655, 815 is 5.

Highest Common Factor of 855,655,815 using Euclid's algorithm

Highest Common Factor of 855,655,815 is 5

Step 1: Since 855 > 655, we apply the division lemma to 855 and 655, to get

855 = 655 x 1 + 200

Step 2: Since the reminder 655 ≠ 0, we apply division lemma to 200 and 655, to get

655 = 200 x 3 + 55

Step 3: We consider the new divisor 200 and the new remainder 55, and apply the division lemma to get

200 = 55 x 3 + 35

We consider the new divisor 55 and the new remainder 35,and apply the division lemma to get

55 = 35 x 1 + 20

We consider the new divisor 35 and the new remainder 20,and apply the division lemma to get

35 = 20 x 1 + 15

We consider the new divisor 20 and the new remainder 15,and apply the division lemma to get

20 = 15 x 1 + 5

We consider the new divisor 15 and the new remainder 5,and apply the division lemma to get

15 = 5 x 3 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 855 and 655 is 5

Notice that 5 = HCF(15,5) = HCF(20,15) = HCF(35,20) = HCF(55,35) = HCF(200,55) = HCF(655,200) = HCF(855,655) .

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

Step 1: Since 815 > 5, we apply the division lemma to 815 and 5, to get

815 = 5 x 163 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 5 and 815 is 5

Notice that 5 = HCF(815,5) .

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Frequently Asked Questions on HCF of 855, 655, 815 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 855, 655, 815?

Answer: HCF of 855, 655, 815 is 5 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 855, 655, 815 using Euclid's Algorithm?

Answer: For arbitrary numbers 855, 655, 815 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.