Highest Common Factor of 691, 980, 789 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 691, 980, 789 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 691, 980, 789 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 691, 980, 789 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 691, 980, 789 is 1.
HCF(691, 980, 789) = 1
HCF of 691, 980, 789 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 691, 980, 789 is 1.
Highest Common Factor of 691,980,789 is 1
Step 1: Since 980 > 691, we apply the division lemma to 980 and 691, to get
980 = 691 x 1 + 289
Step 2: Since the reminder 691 ≠ 0, we apply division lemma to 289 and 691, to get
691 = 289 x 2 + 113
Step 3: We consider the new divisor 289 and the new remainder 113, and apply the division lemma to get
289 = 113 x 2 + 63
We consider the new divisor 113 and the new remainder 63,and apply the division lemma to get
113 = 63 x 1 + 50
We consider the new divisor 63 and the new remainder 50,and apply the division lemma to get
63 = 50 x 1 + 13
We consider the new divisor 50 and the new remainder 13,and apply the division lemma to get
50 = 13 x 3 + 11
We consider the new divisor 13 and the new remainder 11,and apply the division lemma to get
13 = 11 x 1 + 2
We consider the new divisor 11 and the new remainder 2,and apply the division lemma to get
11 = 2 x 5 + 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 691 and 980 is 1
Notice that 1 = HCF(2,1) = HCF(11,2) = HCF(13,11) = HCF(50,13) = HCF(63,50) = HCF(113,63) = HCF(289,113) = HCF(691,289) = HCF(980,691) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 789 > 1, we apply the division lemma to 789 and 1, to get
789 = 1 x 789 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 789 is 1
Notice that 1 = HCF(789,1) .
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Frequently Asked Questions on HCF of 691, 980, 789 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 691, 980, 789?
Answer: HCF of 691, 980, 789 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 691, 980, 789 using Euclid's Algorithm?
Answer: For arbitrary numbers 691, 980, 789 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.