Highest Common Factor of 490, 797, 30 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 490, 797, 30 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 490, 797, 30 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 490, 797, 30 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 490, 797, 30 is 1.

HCF(490, 797, 30) = 1

HCF of 490, 797, 30 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 490, 797, 30 is 1.

Highest Common Factor of 490,797,30 using Euclid's algorithm

Highest Common Factor of 490,797,30 is 1

Step 1: Since 797 > 490, we apply the division lemma to 797 and 490, to get

797 = 490 x 1 + 307

Step 2: Since the reminder 490 ≠ 0, we apply division lemma to 307 and 490, to get

490 = 307 x 1 + 183

Step 3: We consider the new divisor 307 and the new remainder 183, and apply the division lemma to get

307 = 183 x 1 + 124

We consider the new divisor 183 and the new remainder 124,and apply the division lemma to get

183 = 124 x 1 + 59

We consider the new divisor 124 and the new remainder 59,and apply the division lemma to get

124 = 59 x 2 + 6

We consider the new divisor 59 and the new remainder 6,and apply the division lemma to get

59 = 6 x 9 + 5

We consider the new divisor 6 and the new remainder 5,and apply the division lemma to get

6 = 5 x 1 + 1

We consider the new divisor 5 and the new remainder 1,and apply the division lemma to get

5 = 1 x 5 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 490 and 797 is 1

Notice that 1 = HCF(5,1) = HCF(6,5) = HCF(59,6) = HCF(124,59) = HCF(183,124) = HCF(307,183) = HCF(490,307) = HCF(797,490) .

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

Step 1: Since 30 > 1, we apply the division lemma to 30 and 1, to get

30 = 1 x 30 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 30 is 1

Notice that 1 = HCF(30,1) .

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Frequently Asked Questions on HCF of 490, 797, 30 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 490, 797, 30?

Answer: HCF of 490, 797, 30 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 490, 797, 30 using Euclid's Algorithm?

Answer: For arbitrary numbers 490, 797, 30 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.