Highest Common Factor of 420, 649, 315 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 420, 649, 315 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 420, 649, 315 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 420, 649, 315 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 420, 649, 315 is 1.
HCF(420, 649, 315) = 1
HCF of 420, 649, 315 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 420, 649, 315 is 1.
Highest Common Factor of 420,649,315 is 1
Step 1: Since 649 > 420, we apply the division lemma to 649 and 420, to get
649 = 420 x 1 + 229
Step 2: Since the reminder 420 ≠ 0, we apply division lemma to 229 and 420, to get
420 = 229 x 1 + 191
Step 3: We consider the new divisor 229 and the new remainder 191, and apply the division lemma to get
229 = 191 x 1 + 38
We consider the new divisor 191 and the new remainder 38,and apply the division lemma to get
191 = 38 x 5 + 1
We consider the new divisor 38 and the new remainder 1,and apply the division lemma to get
38 = 1 x 38 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 420 and 649 is 1
Notice that 1 = HCF(38,1) = HCF(191,38) = HCF(229,191) = HCF(420,229) = HCF(649,420) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 315 > 1, we apply the division lemma to 315 and 1, to get
315 = 1 x 315 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 315 is 1
Notice that 1 = HCF(315,1) .
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Frequently Asked Questions on HCF of 420, 649, 315 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 420, 649, 315?
Answer: HCF of 420, 649, 315 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 420, 649, 315 using Euclid's Algorithm?
Answer: For arbitrary numbers 420, 649, 315 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.