Highest Common Factor of 815, 474, 981 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 815, 474, 981 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 815, 474, 981 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 815, 474, 981 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 815, 474, 981 is 1.
HCF(815, 474, 981) = 1
HCF of 815, 474, 981 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 815, 474, 981 is 1.
Highest Common Factor of 815,474,981 is 1
Step 1: Since 815 > 474, we apply the division lemma to 815 and 474, to get
815 = 474 x 1 + 341
Step 2: Since the reminder 474 ≠ 0, we apply division lemma to 341 and 474, to get
474 = 341 x 1 + 133
Step 3: We consider the new divisor 341 and the new remainder 133, and apply the division lemma to get
341 = 133 x 2 + 75
We consider the new divisor 133 and the new remainder 75,and apply the division lemma to get
133 = 75 x 1 + 58
We consider the new divisor 75 and the new remainder 58,and apply the division lemma to get
75 = 58 x 1 + 17
We consider the new divisor 58 and the new remainder 17,and apply the division lemma to get
58 = 17 x 3 + 7
We consider the new divisor 17 and the new remainder 7,and apply the division lemma to get
17 = 7 x 2 + 3
We consider the new divisor 7 and the new remainder 3,and apply the division lemma to get
7 = 3 x 2 + 1
We consider the new divisor 3 and the new remainder 1,and apply the division lemma to get
3 = 1 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 815 and 474 is 1
Notice that 1 = HCF(3,1) = HCF(7,3) = HCF(17,7) = HCF(58,17) = HCF(75,58) = HCF(133,75) = HCF(341,133) = HCF(474,341) = HCF(815,474) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 981 > 1, we apply the division lemma to 981 and 1, to get
981 = 1 x 981 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 981 is 1
Notice that 1 = HCF(981,1) .
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Frequently Asked Questions on HCF of 815, 474, 981 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 815, 474, 981?
Answer: HCF of 815, 474, 981 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 815, 474, 981 using Euclid's Algorithm?
Answer: For arbitrary numbers 815, 474, 981 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.