Highest Common Factor of 99, 70, 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 99, 70, 198 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 99, 70, 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 99, 70, 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 99, 70, 198 is 1.

HCF(99, 70, 198) = 1

HCF of 99, 70, 198 using Euclid's algorithm

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

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Highest common factor (HCF) of 99, 70, 198 is 1.

Highest Common Factor of 99,70,198 using Euclid's algorithm

Highest Common Factor of 99,70,198 is 1

Step 1: Since 99 > 70, we apply the division lemma to 99 and 70, to get

99 = 70 x 1 + 29

Step 2: Since the reminder 70 ≠ 0, we apply division lemma to 29 and 70, to get

70 = 29 x 2 + 12

Step 3: We consider the new divisor 29 and the new remainder 12, and apply the division lemma to get

29 = 12 x 2 + 5

We consider the new divisor 12 and the new remainder 5,and apply the division lemma to get

12 = 5 x 2 + 2

We consider the new divisor 5 and the new remainder 2,and apply the division lemma to get

5 = 2 x 2 + 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 99 and 70 is 1

Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(12,5) = HCF(29,12) = HCF(70,29) = HCF(99,70) .

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

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

198 = 1 x 198 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 198 is 1

Notice that 1 = HCF(198,1) .

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Frequently Asked Questions on HCF of 99, 70, 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 99, 70, 198?

Answer: HCF of 99, 70, 198 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 99, 70, 198 using Euclid's Algorithm?

Answer: For arbitrary numbers 99, 70, 198 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.