Highest Common Factor of 720, 978, 743 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 720, 978, 743 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 720, 978, 743 is 1 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 720, 978, 743 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 720, 978, 743 is 1.
HCF(720, 978, 743) = 1
HCF of 720, 978, 743 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 720, 978, 743 is 1.
Highest Common Factor of 720,978,743 is 1
Step 1: Since 978 > 720, we apply the division lemma to 978 and 720, to get
978 = 720 x 1 + 258
Step 2: Since the reminder 720 ≠ 0, we apply division lemma to 258 and 720, to get
720 = 258 x 2 + 204
Step 3: We consider the new divisor 258 and the new remainder 204, and apply the division lemma to get
258 = 204 x 1 + 54
We consider the new divisor 204 and the new remainder 54,and apply the division lemma to get
204 = 54 x 3 + 42
We consider the new divisor 54 and the new remainder 42,and apply the division lemma to get
54 = 42 x 1 + 12
We consider the new divisor 42 and the new remainder 12,and apply the division lemma to get
42 = 12 x 3 + 6
We consider the new divisor 12 and the new remainder 6,and apply the division lemma to get
12 = 6 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 6, the HCF of 720 and 978 is 6
Notice that 6 = HCF(12,6) = HCF(42,12) = HCF(54,42) = HCF(204,54) = HCF(258,204) = HCF(720,258) = HCF(978,720) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 743 > 6, we apply the division lemma to 743 and 6, to get
743 = 6 x 123 + 5
Step 2: Since the reminder 6 ≠ 0, we apply division lemma to 5 and 6, to get
6 = 5 x 1 + 1
Step 3: We consider the new divisor 5 and the new remainder 1, and apply the division lemma to get
5 = 1 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 6 and 743 is 1
Notice that 1 = HCF(5,1) = HCF(6,5) = HCF(743,6) .
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Frequently Asked Questions on HCF of 720, 978, 743 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 720, 978, 743?
Answer: HCF of 720, 978, 743 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 720, 978, 743 using Euclid's Algorithm?
Answer: For arbitrary numbers 720, 978, 743 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.