Highest Common Factor of 782, 621, 418, 20 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 782, 621, 418, 20 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 782, 621, 418, 20 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 782, 621, 418, 20 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 782, 621, 418, 20 is 1.
HCF(782, 621, 418, 20) = 1
HCF of 782, 621, 418, 20 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 782, 621, 418, 20 is 1.
Highest Common Factor of 782,621,418,20 is 1
Step 1: Since 782 > 621, we apply the division lemma to 782 and 621, to get
782 = 621 x 1 + 161
Step 2: Since the reminder 621 ≠ 0, we apply division lemma to 161 and 621, to get
621 = 161 x 3 + 138
Step 3: We consider the new divisor 161 and the new remainder 138, and apply the division lemma to get
161 = 138 x 1 + 23
We consider the new divisor 138 and the new remainder 23, and apply the division lemma to get
138 = 23 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 23, the HCF of 782 and 621 is 23
Notice that 23 = HCF(138,23) = HCF(161,138) = HCF(621,161) = HCF(782,621) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 418 > 23, we apply the division lemma to 418 and 23, to get
418 = 23 x 18 + 4
Step 2: Since the reminder 23 ≠ 0, we apply division lemma to 4 and 23, to get
23 = 4 x 5 + 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 23 and 418 is 1
Notice that 1 = HCF(3,1) = HCF(4,3) = HCF(23,4) = HCF(418,23) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 20 > 1, we apply the division lemma to 20 and 1, to get
20 = 1 x 20 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 20 is 1
Notice that 1 = HCF(20,1) .
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Frequently Asked Questions on HCF of 782, 621, 418, 20 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 782, 621, 418, 20?
Answer: HCF of 782, 621, 418, 20 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 782, 621, 418, 20 using Euclid's Algorithm?
Answer: For arbitrary numbers 782, 621, 418, 20 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.