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 979, 381, 155 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 979, 381, 155 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 979, 381, 155 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 979, 381, 155 is 1.
HCF(979, 381, 155) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 979, 381, 155 is 1.
Step 1: Since 979 > 381, we apply the division lemma to 979 and 381, to get
979 = 381 x 2 + 217
Step 2: Since the reminder 381 ≠ 0, we apply division lemma to 217 and 381, to get
381 = 217 x 1 + 164
Step 3: We consider the new divisor 217 and the new remainder 164, and apply the division lemma to get
217 = 164 x 1 + 53
We consider the new divisor 164 and the new remainder 53,and apply the division lemma to get
164 = 53 x 3 + 5
We consider the new divisor 53 and the new remainder 5,and apply the division lemma to get
53 = 5 x 10 + 3
We consider the new divisor 5 and the new remainder 3,and apply the division lemma to get
5 = 3 x 1 + 2
We consider the new divisor 3 and the new remainder 2,and apply the division lemma to get
3 = 2 x 1 + 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 979 and 381 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(53,5) = HCF(164,53) = HCF(217,164) = HCF(381,217) = HCF(979,381) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 155 > 1, we apply the division lemma to 155 and 1, to get
155 = 1 x 155 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 155 is 1
Notice that 1 = HCF(155,1) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 979, 381, 155?
Answer: HCF of 979, 381, 155 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 979, 381, 155 using Euclid's Algorithm?
Answer: For arbitrary numbers 979, 381, 155 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.