Highest Common Factor of 987, 691, 556 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 987, 691, 556 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 987, 691, 556 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 987, 691, 556 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 987, 691, 556 is 1.
HCF(987, 691, 556) = 1
HCF of 987, 691, 556 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 987, 691, 556 is 1.
Highest Common Factor of 987,691,556 is 1
Step 1: Since 987 > 691, we apply the division lemma to 987 and 691, to get
987 = 691 x 1 + 296
Step 2: Since the reminder 691 ≠ 0, we apply division lemma to 296 and 691, to get
691 = 296 x 2 + 99
Step 3: We consider the new divisor 296 and the new remainder 99, and apply the division lemma to get
296 = 99 x 2 + 98
We consider the new divisor 99 and the new remainder 98,and apply the division lemma to get
99 = 98 x 1 + 1
We consider the new divisor 98 and the new remainder 1,and apply the division lemma to get
98 = 1 x 98 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 987 and 691 is 1
Notice that 1 = HCF(98,1) = HCF(99,98) = HCF(296,99) = HCF(691,296) = HCF(987,691) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 556 > 1, we apply the division lemma to 556 and 1, to get
556 = 1 x 556 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 556 is 1
Notice that 1 = HCF(556,1) .
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Frequently Asked Questions on HCF of 987, 691, 556 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 987, 691, 556?
Answer: HCF of 987, 691, 556 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 987, 691, 556 using Euclid's Algorithm?
Answer: For arbitrary numbers 987, 691, 556 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.