Highest Common Factor of 670, 790, 842 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, 790, 842 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 670, 790, 842 is 2 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, 790, 842 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, 790, 842 is 2.
HCF(670, 790, 842) = 2
HCF of 670, 790, 842 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, 790, 842 is 2.
Highest Common Factor of 670,790,842 is 2
Step 1: Since 790 > 670, we apply the division lemma to 790 and 670, to get
790 = 670 x 1 + 120
Step 2: Since the reminder 670 ≠ 0, we apply division lemma to 120 and 670, to get
670 = 120 x 5 + 70
Step 3: We consider the new divisor 120 and the new remainder 70, and apply the division lemma to get
120 = 70 x 1 + 50
We consider the new divisor 70 and the new remainder 50,and apply the division lemma to get
70 = 50 x 1 + 20
We consider the new divisor 50 and the new remainder 20,and apply the division lemma to get
50 = 20 x 2 + 10
We consider the new divisor 20 and the new remainder 10,and apply the division lemma to get
20 = 10 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 10, the HCF of 670 and 790 is 10
Notice that 10 = HCF(20,10) = HCF(50,20) = HCF(70,50) = HCF(120,70) = HCF(670,120) = HCF(790,670) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 842 > 10, we apply the division lemma to 842 and 10, to get
842 = 10 x 84 + 2
Step 2: Since the reminder 10 ≠ 0, we apply division lemma to 2 and 10, to get
10 = 2 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 10 and 842 is 2
Notice that 2 = HCF(10,2) = HCF(842,10) .
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Frequently Asked Questions on HCF of 670, 790, 842 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, 790, 842?
Answer: HCF of 670, 790, 842 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 670, 790, 842 using Euclid's Algorithm?
Answer: For arbitrary numbers 670, 790, 842 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.