Highest Common Factor of 721, 154, 502 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 721, 154, 502 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 721, 154, 502 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 721, 154, 502 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 721, 154, 502 is 1.
HCF(721, 154, 502) = 1
HCF of 721, 154, 502 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 721, 154, 502 is 1.
Highest Common Factor of 721,154,502 is 1
Step 1: Since 721 > 154, we apply the division lemma to 721 and 154, to get
721 = 154 x 4 + 105
Step 2: Since the reminder 154 ≠ 0, we apply division lemma to 105 and 154, to get
154 = 105 x 1 + 49
Step 3: We consider the new divisor 105 and the new remainder 49, and apply the division lemma to get
105 = 49 x 2 + 7
We consider the new divisor 49 and the new remainder 7, and apply the division lemma to get
49 = 7 x 7 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 7, the HCF of 721 and 154 is 7
Notice that 7 = HCF(49,7) = HCF(105,49) = HCF(154,105) = HCF(721,154) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 502 > 7, we apply the division lemma to 502 and 7, to get
502 = 7 x 71 + 5
Step 2: Since the reminder 7 ≠ 0, we apply division lemma to 5 and 7, to get
7 = 5 x 1 + 2
Step 3: We consider the new divisor 5 and the new remainder 2, and apply the division lemma to get
5 = 2 x 2 + 1
We consider the new divisor 2 and the new remainder 1, and apply the division lemma to get
2 = 1 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 7 and 502 is 1
Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(7,5) = HCF(502,7) .
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Frequently Asked Questions on HCF of 721, 154, 502 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 721, 154, 502?
Answer: HCF of 721, 154, 502 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 721, 154, 502 using Euclid's Algorithm?
Answer: For arbitrary numbers 721, 154, 502 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.