Highest Common Factor of 398, 777, 780 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 398, 777, 780 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 398, 777, 780 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 398, 777, 780 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 398, 777, 780 is 1.
HCF(398, 777, 780) = 1
HCF of 398, 777, 780 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 398, 777, 780 is 1.
Highest Common Factor of 398,777,780 is 1
Step 1: Since 777 > 398, we apply the division lemma to 777 and 398, to get
777 = 398 x 1 + 379
Step 2: Since the reminder 398 ≠ 0, we apply division lemma to 379 and 398, to get
398 = 379 x 1 + 19
Step 3: We consider the new divisor 379 and the new remainder 19, and apply the division lemma to get
379 = 19 x 19 + 18
We consider the new divisor 19 and the new remainder 18,and apply the division lemma to get
19 = 18 x 1 + 1
We consider the new divisor 18 and the new remainder 1,and apply the division lemma to get
18 = 1 x 18 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 398 and 777 is 1
Notice that 1 = HCF(18,1) = HCF(19,18) = HCF(379,19) = HCF(398,379) = HCF(777,398) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 780 > 1, we apply the division lemma to 780 and 1, to get
780 = 1 x 780 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 780 is 1
Notice that 1 = HCF(780,1) .
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Frequently Asked Questions on HCF of 398, 777, 780 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 398, 777, 780?
Answer: HCF of 398, 777, 780 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 398, 777, 780 using Euclid's Algorithm?
Answer: For arbitrary numbers 398, 777, 780 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.