Highest Common Factor of 670, 969, 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 670, 969, 20 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 670, 969, 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 670, 969, 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 670, 969, 20 is 1.
HCF(670, 969, 20) = 1
HCF of 670, 969, 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 670, 969, 20 is 1.
Highest Common Factor of 670,969,20 is 1
Step 1: Since 969 > 670, we apply the division lemma to 969 and 670, to get
969 = 670 x 1 + 299
Step 2: Since the reminder 670 ≠ 0, we apply division lemma to 299 and 670, to get
670 = 299 x 2 + 72
Step 3: We consider the new divisor 299 and the new remainder 72, and apply the division lemma to get
299 = 72 x 4 + 11
We consider the new divisor 72 and the new remainder 11,and apply the division lemma to get
72 = 11 x 6 + 6
We consider the new divisor 11 and the new remainder 6,and apply the division lemma to get
11 = 6 x 1 + 5
We consider the new divisor 6 and the new remainder 5,and apply the division lemma to get
6 = 5 x 1 + 1
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 670 and 969 is 1
Notice that 1 = HCF(5,1) = HCF(6,5) = HCF(11,6) = HCF(72,11) = HCF(299,72) = HCF(670,299) = HCF(969,670) .
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 670, 969, 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 670, 969, 20?
Answer: HCF of 670, 969, 20 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 670, 969, 20 using Euclid's Algorithm?
Answer: For arbitrary numbers 670, 969, 20 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.