Highest Common Factor of 749, 543, 645 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 749, 543, 645 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 749, 543, 645 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 749, 543, 645 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 749, 543, 645 is 1.
HCF(749, 543, 645) = 1
HCF of 749, 543, 645 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 749, 543, 645 is 1.
Highest Common Factor of 749,543,645 is 1
Step 1: Since 749 > 543, we apply the division lemma to 749 and 543, to get
749 = 543 x 1 + 206
Step 2: Since the reminder 543 ≠ 0, we apply division lemma to 206 and 543, to get
543 = 206 x 2 + 131
Step 3: We consider the new divisor 206 and the new remainder 131, and apply the division lemma to get
206 = 131 x 1 + 75
We consider the new divisor 131 and the new remainder 75,and apply the division lemma to get
131 = 75 x 1 + 56
We consider the new divisor 75 and the new remainder 56,and apply the division lemma to get
75 = 56 x 1 + 19
We consider the new divisor 56 and the new remainder 19,and apply the division lemma to get
56 = 19 x 2 + 18
We consider the new divisor 19 and the new remainder 18,and apply the division lemma to get
19 = 18 x 1 + 1
We consider the new divisor 18 and the new remainder 1,and apply the division lemma to get
18 = 1 x 18 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 749 and 543 is 1
Notice that 1 = HCF(18,1) = HCF(19,18) = HCF(56,19) = HCF(75,56) = HCF(131,75) = HCF(206,131) = HCF(543,206) = HCF(749,543) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 645 > 1, we apply the division lemma to 645 and 1, to get
645 = 1 x 645 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 645 is 1
Notice that 1 = HCF(645,1) .
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Frequently Asked Questions on HCF of 749, 543, 645 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 749, 543, 645?
Answer: HCF of 749, 543, 645 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 749, 543, 645 using Euclid's Algorithm?
Answer: For arbitrary numbers 749, 543, 645 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.