Highest Common Factor of 18, 84, 27, 438 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 18, 84, 27, 438 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 18, 84, 27, 438 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 18, 84, 27, 438 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 18, 84, 27, 438 is 3.
HCF(18, 84, 27, 438) = 3
HCF of 18, 84, 27, 438 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 18, 84, 27, 438 is 3.
Highest Common Factor of 18,84,27,438 is 3
Step 1: Since 84 > 18, we apply the division lemma to 84 and 18, to get
84 = 18 x 4 + 12
Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 12 and 18, to get
18 = 12 x 1 + 6
Step 3: 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 18 and 84 is 6
Notice that 6 = HCF(12,6) = HCF(18,12) = HCF(84,18) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 27 > 6, we apply the division lemma to 27 and 6, to get
27 = 6 x 4 + 3
Step 2: Since the reminder 6 ≠ 0, we apply division lemma to 3 and 6, to get
6 = 3 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 6 and 27 is 3
Notice that 3 = HCF(6,3) = HCF(27,6) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 438 > 3, we apply the division lemma to 438 and 3, to get
438 = 3 x 146 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 3 and 438 is 3
Notice that 3 = HCF(438,3) .
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Frequently Asked Questions on HCF of 18, 84, 27, 438 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 18, 84, 27, 438?
Answer: HCF of 18, 84, 27, 438 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 18, 84, 27, 438 using Euclid's Algorithm?
Answer: For arbitrary numbers 18, 84, 27, 438 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.