Highest Common Factor of 168, 780, 647 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 168, 780, 647 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 168, 780, 647 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 168, 780, 647 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 168, 780, 647 is 1.
HCF(168, 780, 647) = 1
HCF of 168, 780, 647 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 168, 780, 647 is 1.
Highest Common Factor of 168,780,647 is 1
Step 1: Since 780 > 168, we apply the division lemma to 780 and 168, to get
780 = 168 x 4 + 108
Step 2: Since the reminder 168 ≠ 0, we apply division lemma to 108 and 168, to get
168 = 108 x 1 + 60
Step 3: We consider the new divisor 108 and the new remainder 60, and apply the division lemma to get
108 = 60 x 1 + 48
We consider the new divisor 60 and the new remainder 48,and apply the division lemma to get
60 = 48 x 1 + 12
We consider the new divisor 48 and the new remainder 12,and apply the division lemma to get
48 = 12 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 12, the HCF of 168 and 780 is 12
Notice that 12 = HCF(48,12) = HCF(60,48) = HCF(108,60) = HCF(168,108) = HCF(780,168) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 647 > 12, we apply the division lemma to 647 and 12, to get
647 = 12 x 53 + 11
Step 2: Since the reminder 12 ≠ 0, we apply division lemma to 11 and 12, to get
12 = 11 x 1 + 1
Step 3: We consider the new divisor 11 and the new remainder 1, and apply the division lemma to get
11 = 1 x 11 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 12 and 647 is 1
Notice that 1 = HCF(11,1) = HCF(12,11) = HCF(647,12) .
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Frequently Asked Questions on HCF of 168, 780, 647 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 168, 780, 647?
Answer: HCF of 168, 780, 647 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 168, 780, 647 using Euclid's Algorithm?
Answer: For arbitrary numbers 168, 780, 647 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.