Highest Common Factor of 978, 620, 30 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 978, 620, 30 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 978, 620, 30 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 978, 620, 30 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 978, 620, 30 is 2.
HCF(978, 620, 30) = 2
HCF of 978, 620, 30 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 978, 620, 30 is 2.
Highest Common Factor of 978,620,30 is 2
Step 1: Since 978 > 620, we apply the division lemma to 978 and 620, to get
978 = 620 x 1 + 358
Step 2: Since the reminder 620 ≠ 0, we apply division lemma to 358 and 620, to get
620 = 358 x 1 + 262
Step 3: We consider the new divisor 358 and the new remainder 262, and apply the division lemma to get
358 = 262 x 1 + 96
We consider the new divisor 262 and the new remainder 96,and apply the division lemma to get
262 = 96 x 2 + 70
We consider the new divisor 96 and the new remainder 70,and apply the division lemma to get
96 = 70 x 1 + 26
We consider the new divisor 70 and the new remainder 26,and apply the division lemma to get
70 = 26 x 2 + 18
We consider the new divisor 26 and the new remainder 18,and apply the division lemma to get
26 = 18 x 1 + 8
We consider the new divisor 18 and the new remainder 8,and apply the division lemma to get
18 = 8 x 2 + 2
We consider the new divisor 8 and the new remainder 2,and apply the division lemma to get
8 = 2 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 978 and 620 is 2
Notice that 2 = HCF(8,2) = HCF(18,8) = HCF(26,18) = HCF(70,26) = HCF(96,70) = HCF(262,96) = HCF(358,262) = HCF(620,358) = HCF(978,620) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 30 > 2, we apply the division lemma to 30 and 2, to get
30 = 2 x 15 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 2 and 30 is 2
Notice that 2 = HCF(30,2) .
HCF using Euclid's Algorithm Calculation Examples
Here are some samples of HCF using Euclid's Algorithm calculations.
Frequently Asked Questions on HCF of 978, 620, 30 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 978, 620, 30?
Answer: HCF of 978, 620, 30 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 978, 620, 30 using Euclid's Algorithm?
Answer: For arbitrary numbers 978, 620, 30 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.