Highest Common Factor of 642, 456, 71 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 642, 456, 71 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 642, 456, 71 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 642, 456, 71 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 642, 456, 71 is 1.
HCF(642, 456, 71) = 1
HCF of 642, 456, 71 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 642, 456, 71 is 1.
Highest Common Factor of 642,456,71 is 1
Step 1: Since 642 > 456, we apply the division lemma to 642 and 456, to get
642 = 456 x 1 + 186
Step 2: Since the reminder 456 ≠ 0, we apply division lemma to 186 and 456, to get
456 = 186 x 2 + 84
Step 3: We consider the new divisor 186 and the new remainder 84, and apply the division lemma to get
186 = 84 x 2 + 18
We consider the new divisor 84 and the new remainder 18,and apply the division lemma to get
84 = 18 x 4 + 12
We consider the new divisor 18 and the new remainder 12,and apply the division lemma to get
18 = 12 x 1 + 6
We consider the new divisor 12 and the new remainder 6,and apply the division lemma to get
12 = 6 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 6, the HCF of 642 and 456 is 6
Notice that 6 = HCF(12,6) = HCF(18,12) = HCF(84,18) = HCF(186,84) = HCF(456,186) = HCF(642,456) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 71 > 6, we apply the division lemma to 71 and 6, to get
71 = 6 x 11 + 5
Step 2: Since the reminder 6 ≠ 0, we apply division lemma to 5 and 6, to get
6 = 5 x 1 + 1
Step 3: We consider the new divisor 5 and the new remainder 1, and apply the division lemma to get
5 = 1 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 6 and 71 is 1
Notice that 1 = HCF(5,1) = HCF(6,5) = HCF(71,6) .
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Frequently Asked Questions on HCF of 642, 456, 71 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 642, 456, 71?
Answer: HCF of 642, 456, 71 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 642, 456, 71 using Euclid's Algorithm?
Answer: For arbitrary numbers 642, 456, 71 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.