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 685, 772, 621 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 685, 772, 621 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 685, 772, 621 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 685, 772, 621 is 1.
HCF(685, 772, 621) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 685, 772, 621 is 1.
Step 1: Since 772 > 685, we apply the division lemma to 772 and 685, to get
772 = 685 x 1 + 87
Step 2: Since the reminder 685 ≠ 0, we apply division lemma to 87 and 685, to get
685 = 87 x 7 + 76
Step 3: We consider the new divisor 87 and the new remainder 76, and apply the division lemma to get
87 = 76 x 1 + 11
We consider the new divisor 76 and the new remainder 11,and apply the division lemma to get
76 = 11 x 6 + 10
We consider the new divisor 11 and the new remainder 10,and apply the division lemma to get
11 = 10 x 1 + 1
We consider the new divisor 10 and the new remainder 1,and apply the division lemma to get
10 = 1 x 10 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 685 and 772 is 1
Notice that 1 = HCF(10,1) = HCF(11,10) = HCF(76,11) = HCF(87,76) = HCF(685,87) = HCF(772,685) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 621 > 1, we apply the division lemma to 621 and 1, to get
621 = 1 x 621 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 621 is 1
Notice that 1 = HCF(621,1) .
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 685, 772, 621?
Answer: HCF of 685, 772, 621 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 685, 772, 621 using Euclid's Algorithm?
Answer: For arbitrary numbers 685, 772, 621 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.