Highest Common Factor of 54, 18, 123 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 54, 18, 123 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 54, 18, 123 is 3 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 54, 18, 123 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 54, 18, 123 is 3.
HCF(54, 18, 123) = 3
HCF of 54, 18, 123 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 54, 18, 123 is 3.
Highest Common Factor of 54,18,123 is 3
Step 1: Since 54 > 18, we apply the division lemma to 54 and 18, to get
54 = 18 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 18, the HCF of 54 and 18 is 18
Notice that 18 = HCF(54,18) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 123 > 18, we apply the division lemma to 123 and 18, to get
123 = 18 x 6 + 15
Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 15 and 18, to get
18 = 15 x 1 + 3
Step 3: We consider the new divisor 15 and the new remainder 3, and apply the division lemma to get
15 = 3 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 18 and 123 is 3
Notice that 3 = HCF(15,3) = HCF(18,15) = HCF(123,18) .
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Frequently Asked Questions on HCF of 54, 18, 123 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 54, 18, 123?
Answer: HCF of 54, 18, 123 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 54, 18, 123 using Euclid's Algorithm?
Answer: For arbitrary numbers 54, 18, 123 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.