Highest Common Factor of 520, 365, 78 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 520, 365, 78 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 520, 365, 78 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 520, 365, 78 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 520, 365, 78 is 1.
HCF(520, 365, 78) = 1
HCF of 520, 365, 78 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 520, 365, 78 is 1.
Highest Common Factor of 520,365,78 is 1
Step 1: Since 520 > 365, we apply the division lemma to 520 and 365, to get
520 = 365 x 1 + 155
Step 2: Since the reminder 365 ≠ 0, we apply division lemma to 155 and 365, to get
365 = 155 x 2 + 55
Step 3: We consider the new divisor 155 and the new remainder 55, and apply the division lemma to get
155 = 55 x 2 + 45
We consider the new divisor 55 and the new remainder 45,and apply the division lemma to get
55 = 45 x 1 + 10
We consider the new divisor 45 and the new remainder 10,and apply the division lemma to get
45 = 10 x 4 + 5
We consider the new divisor 10 and the new remainder 5,and apply the division lemma to get
10 = 5 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 520 and 365 is 5
Notice that 5 = HCF(10,5) = HCF(45,10) = HCF(55,45) = HCF(155,55) = HCF(365,155) = HCF(520,365) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 78 > 5, we apply the division lemma to 78 and 5, to get
78 = 5 x 15 + 3
Step 2: Since the reminder 5 ≠ 0, we apply division lemma to 3 and 5, to get
5 = 3 x 1 + 2
Step 3: 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 5 and 78 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(78,5) .
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Frequently Asked Questions on HCF of 520, 365, 78 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 520, 365, 78?
Answer: HCF of 520, 365, 78 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 520, 365, 78 using Euclid's Algorithm?
Answer: For arbitrary numbers 520, 365, 78 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.