Highest Common Factor of 495, 308, 251 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 495, 308, 251 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 495, 308, 251 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 495, 308, 251 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 495, 308, 251 is 1.
HCF(495, 308, 251) = 1
HCF of 495, 308, 251 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 495, 308, 251 is 1.
Highest Common Factor of 495,308,251 is 1
Step 1: Since 495 > 308, we apply the division lemma to 495 and 308, to get
495 = 308 x 1 + 187
Step 2: Since the reminder 308 ≠ 0, we apply division lemma to 187 and 308, to get
308 = 187 x 1 + 121
Step 3: We consider the new divisor 187 and the new remainder 121, and apply the division lemma to get
187 = 121 x 1 + 66
We consider the new divisor 121 and the new remainder 66,and apply the division lemma to get
121 = 66 x 1 + 55
We consider the new divisor 66 and the new remainder 55,and apply the division lemma to get
66 = 55 x 1 + 11
We consider the new divisor 55 and the new remainder 11,and apply the division lemma to get
55 = 11 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 11, the HCF of 495 and 308 is 11
Notice that 11 = HCF(55,11) = HCF(66,55) = HCF(121,66) = HCF(187,121) = HCF(308,187) = HCF(495,308) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 251 > 11, we apply the division lemma to 251 and 11, to get
251 = 11 x 22 + 9
Step 2: Since the reminder 11 ≠ 0, we apply division lemma to 9 and 11, to get
11 = 9 x 1 + 2
Step 3: We consider the new divisor 9 and the new remainder 2, and apply the division lemma to get
9 = 2 x 4 + 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 11 and 251 is 1
Notice that 1 = HCF(2,1) = HCF(9,2) = HCF(11,9) = HCF(251,11) .
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Frequently Asked Questions on HCF of 495, 308, 251 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 495, 308, 251?
Answer: HCF of 495, 308, 251 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 495, 308, 251 using Euclid's Algorithm?
Answer: For arbitrary numbers 495, 308, 251 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.