Highest Common Factor of 49, 84, 39, 638 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 49, 84, 39, 638 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 49, 84, 39, 638 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 49, 84, 39, 638 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 49, 84, 39, 638 is 1.
HCF(49, 84, 39, 638) = 1
HCF of 49, 84, 39, 638 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 49, 84, 39, 638 is 1.
Highest Common Factor of 49,84,39,638 is 1
Step 1: Since 84 > 49, we apply the division lemma to 84 and 49, to get
84 = 49 x 1 + 35
Step 2: Since the reminder 49 ≠ 0, we apply division lemma to 35 and 49, to get
49 = 35 x 1 + 14
Step 3: We consider the new divisor 35 and the new remainder 14, and apply the division lemma to get
35 = 14 x 2 + 7
We consider the new divisor 14 and the new remainder 7, and apply the division lemma to get
14 = 7 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 7, the HCF of 49 and 84 is 7
Notice that 7 = HCF(14,7) = HCF(35,14) = HCF(49,35) = HCF(84,49) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 39 > 7, we apply the division lemma to 39 and 7, to get
39 = 7 x 5 + 4
Step 2: Since the reminder 7 ≠ 0, we apply division lemma to 4 and 7, to get
7 = 4 x 1 + 3
Step 3: We consider the new divisor 4 and the new remainder 3, and apply the division lemma to get
4 = 3 x 1 + 1
We consider the new divisor 3 and the new remainder 1, and apply the division lemma to get
3 = 1 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 7 and 39 is 1
Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(7,4) = HCF(39,7) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 638 > 1, we apply the division lemma to 638 and 1, to get
638 = 1 x 638 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 638 is 1
Notice that 1 = HCF(638,1) .
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Frequently Asked Questions on HCF of 49, 84, 39, 638 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 49, 84, 39, 638?
Answer: HCF of 49, 84, 39, 638 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 49, 84, 39, 638 using Euclid's Algorithm?
Answer: For arbitrary numbers 49, 84, 39, 638 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.