Highest Common Factor of 489, 138 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 489, 138 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 489, 138 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 489, 138 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 489, 138 is 3.
HCF(489, 138) = 3
HCF of 489, 138 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 489, 138 is 3.
Highest Common Factor of 489,138 is 3
Step 1: Since 489 > 138, we apply the division lemma to 489 and 138, to get
489 = 138 x 3 + 75
Step 2: Since the reminder 138 ≠ 0, we apply division lemma to 75 and 138, to get
138 = 75 x 1 + 63
Step 3: We consider the new divisor 75 and the new remainder 63, and apply the division lemma to get
75 = 63 x 1 + 12
We consider the new divisor 63 and the new remainder 12,and apply the division lemma to get
63 = 12 x 5 + 3
We consider the new divisor 12 and the new remainder 3,and apply the division lemma to get
12 = 3 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 489 and 138 is 3
Notice that 3 = HCF(12,3) = HCF(63,12) = HCF(75,63) = HCF(138,75) = HCF(489,138) .
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Frequently Asked Questions on HCF of 489, 138 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 489, 138?
Answer: HCF of 489, 138 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 489, 138 using Euclid's Algorithm?
Answer: For arbitrary numbers 489, 138 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.