Highest Common Factor of 686, 90 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 686, 90 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 686, 90 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 686, 90 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 686, 90 is 2.
HCF(686, 90) = 2
HCF of 686, 90 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 686, 90 is 2.
Highest Common Factor of 686,90 is 2
Step 1: Since 686 > 90, we apply the division lemma to 686 and 90, to get
686 = 90 x 7 + 56
Step 2: Since the reminder 90 ≠ 0, we apply division lemma to 56 and 90, to get
90 = 56 x 1 + 34
Step 3: We consider the new divisor 56 and the new remainder 34, and apply the division lemma to get
56 = 34 x 1 + 22
We consider the new divisor 34 and the new remainder 22,and apply the division lemma to get
34 = 22 x 1 + 12
We consider the new divisor 22 and the new remainder 12,and apply the division lemma to get
22 = 12 x 1 + 10
We consider the new divisor 12 and the new remainder 10,and apply the division lemma to get
12 = 10 x 1 + 2
We consider the new divisor 10 and the new remainder 2,and apply the division lemma 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 686 and 90 is 2
Notice that 2 = HCF(10,2) = HCF(12,10) = HCF(22,12) = HCF(34,22) = HCF(56,34) = HCF(90,56) = HCF(686,90) .
HCF using Euclid's Algorithm Calculation Examples
Here are some samples of HCF using Euclid's Algorithm calculations.
Frequently Asked Questions on HCF of 686, 90 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 686, 90?
Answer: HCF of 686, 90 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 686, 90 using Euclid's Algorithm?
Answer: For arbitrary numbers 686, 90 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.