Highest Common Factor of 920, 120, 639 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 920, 120, 639 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 920, 120, 639 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 920, 120, 639 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 920, 120, 639 is 1.
HCF(920, 120, 639) = 1
HCF of 920, 120, 639 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 920, 120, 639 is 1.
Highest Common Factor of 920,120,639 is 1
Step 1: Since 920 > 120, we apply the division lemma to 920 and 120, to get
920 = 120 x 7 + 80
Step 2: Since the reminder 120 ≠ 0, we apply division lemma to 80 and 120, to get
120 = 80 x 1 + 40
Step 3: We consider the new divisor 80 and the new remainder 40, and apply the division lemma to get
80 = 40 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 40, the HCF of 920 and 120 is 40
Notice that 40 = HCF(80,40) = HCF(120,80) = HCF(920,120) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 639 > 40, we apply the division lemma to 639 and 40, to get
639 = 40 x 15 + 39
Step 2: Since the reminder 40 ≠ 0, we apply division lemma to 39 and 40, to get
40 = 39 x 1 + 1
Step 3: We consider the new divisor 39 and the new remainder 1, and apply the division lemma to get
39 = 1 x 39 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 40 and 639 is 1
Notice that 1 = HCF(39,1) = HCF(40,39) = HCF(639,40) .
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Frequently Asked Questions on HCF of 920, 120, 639 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 920, 120, 639?
Answer: HCF of 920, 120, 639 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 920, 120, 639 using Euclid's Algorithm?
Answer: For arbitrary numbers 920, 120, 639 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.