Highest Common Factor of 55, 80, 198 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 55, 80, 198 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 55, 80, 198 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 55, 80, 198 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 55, 80, 198 is 1.

HCF(55, 80, 198) = 1

HCF of 55, 80, 198 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 55, 80, 198 is 1.

Highest Common Factor of 55,80,198 using Euclid's algorithm

Highest Common Factor of 55,80,198 is 1

Step 1: Since 80 > 55, we apply the division lemma to 80 and 55, to get

80 = 55 x 1 + 25

Step 2: Since the reminder 55 ≠ 0, we apply division lemma to 25 and 55, to get

55 = 25 x 2 + 5

Step 3: We consider the new divisor 25 and the new remainder 5, and apply the division lemma to get

25 = 5 x 5 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 55 and 80 is 5

Notice that 5 = HCF(25,5) = HCF(55,25) = HCF(80,55) .

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

Step 1: Since 198 > 5, we apply the division lemma to 198 and 5, to get

198 = 5 x 39 + 3

Step 2: Since the reminder 5 ≠ 0, we apply division lemma to 3 and 5, to get

5 = 3 x 1 + 2

Step 3: 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 5 and 198 is 1

Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(198,5) .

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Frequently Asked Questions on HCF of 55, 80, 198 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 55, 80, 198?

Answer: HCF of 55, 80, 198 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 55, 80, 198 using Euclid's Algorithm?

Answer: For arbitrary numbers 55, 80, 198 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.