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 684, 306, 789 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 684, 306, 789 is 3 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 684, 306, 789 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 684, 306, 789 is 3.
HCF(684, 306, 789) = 3
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 684, 306, 789 is 3.
Step 1: Since 684 > 306, we apply the division lemma to 684 and 306, to get
684 = 306 x 2 + 72
Step 2: Since the reminder 306 ≠ 0, we apply division lemma to 72 and 306, to get
306 = 72 x 4 + 18
Step 3: We consider the new divisor 72 and the new remainder 18, and apply the division lemma to get
72 = 18 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 18, the HCF of 684 and 306 is 18
Notice that 18 = HCF(72,18) = HCF(306,72) = HCF(684,306) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 789 > 18, we apply the division lemma to 789 and 18, to get
789 = 18 x 43 + 15
Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 15 and 18, to get
18 = 15 x 1 + 3
Step 3: We consider the new divisor 15 and the new remainder 3, and apply the division lemma to get
15 = 3 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 18 and 789 is 3
Notice that 3 = HCF(15,3) = HCF(18,15) = HCF(789,18) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 684, 306, 789?
Answer: HCF of 684, 306, 789 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 684, 306, 789 using Euclid's Algorithm?
Answer: For arbitrary numbers 684, 306, 789 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.