Highest Common Factor of 658, 77 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 658, 77 i.e. 7 the largest integer that leaves a remainder zero for all numbers.
HCF of 658, 77 is 7 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 658, 77 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 658, 77 is 7.
HCF(658, 77) = 7
HCF of 658, 77 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 658, 77 is 7.
Highest Common Factor of 658,77 is 7
Step 1: Since 658 > 77, we apply the division lemma to 658 and 77, to get
658 = 77 x 8 + 42
Step 2: Since the reminder 77 ≠ 0, we apply division lemma to 42 and 77, to get
77 = 42 x 1 + 35
Step 3: We consider the new divisor 42 and the new remainder 35, and apply the division lemma to get
42 = 35 x 1 + 7
We consider the new divisor 35 and the new remainder 7, and apply the division lemma to get
35 = 7 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 7, the HCF of 658 and 77 is 7
Notice that 7 = HCF(35,7) = HCF(42,35) = HCF(77,42) = HCF(658,77) .
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Frequently Asked Questions on HCF of 658, 77 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 658, 77?
Answer: HCF of 658, 77 is 7 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 658, 77 using Euclid's Algorithm?
Answer: For arbitrary numbers 658, 77 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.