Highest Common Factor of 789, 205, 394 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 789, 205, 394 i.e. 1 the largest integer that leaves a remainder zero for all numbers.

HCF of 789, 205, 394 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 789, 205, 394 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 789, 205, 394 is 1.

HCF(789, 205, 394) = 1

HCF of 789, 205, 394 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 789, 205, 394 is 1.

Highest Common Factor of 789,205,394 using Euclid's algorithm

Highest Common Factor of 789,205,394 is 1

Step 1: Since 789 > 205, we apply the division lemma to 789 and 205, to get

789 = 205 x 3 + 174

Step 2: Since the reminder 205 ≠ 0, we apply division lemma to 174 and 205, to get

205 = 174 x 1 + 31

Step 3: We consider the new divisor 174 and the new remainder 31, and apply the division lemma to get

174 = 31 x 5 + 19

We consider the new divisor 31 and the new remainder 19,and apply the division lemma to get

31 = 19 x 1 + 12

We consider the new divisor 19 and the new remainder 12,and apply the division lemma to get

19 = 12 x 1 + 7

We consider the new divisor 12 and the new remainder 7,and apply the division lemma to get

12 = 7 x 1 + 5

We consider the new divisor 7 and the new remainder 5,and apply the division lemma to get

7 = 5 x 1 + 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 789 and 205 is 1

Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(7,5) = HCF(12,7) = HCF(19,12) = HCF(31,19) = HCF(174,31) = HCF(205,174) = HCF(789,205) .

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

Step 1: Since 394 > 1, we apply the division lemma to 394 and 1, to get

394 = 1 x 394 + 0

The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 394 is 1

Notice that 1 = HCF(394,1) .

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Frequently Asked Questions on HCF of 789, 205, 394 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 789, 205, 394?

Answer: HCF of 789, 205, 394 is 1 the largest number that divides all the numbers leaving a remainder zero.

3. How to find HCF of 789, 205, 394 using Euclid's Algorithm?

Answer: For arbitrary numbers 789, 205, 394 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.