Highest Common Factor of 285, 771 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 285, 771 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 285, 771 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 285, 771 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 285, 771 is 3.
HCF(285, 771) = 3
HCF of 285, 771 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 285, 771 is 3.
Highest Common Factor of 285,771 is 3
Step 1: Since 771 > 285, we apply the division lemma to 771 and 285, to get
771 = 285 x 2 + 201
Step 2: Since the reminder 285 ≠ 0, we apply division lemma to 201 and 285, to get
285 = 201 x 1 + 84
Step 3: We consider the new divisor 201 and the new remainder 84, and apply the division lemma to get
201 = 84 x 2 + 33
We consider the new divisor 84 and the new remainder 33,and apply the division lemma to get
84 = 33 x 2 + 18
We consider the new divisor 33 and the new remainder 18,and apply the division lemma to get
33 = 18 x 1 + 15
We consider the new divisor 18 and the new remainder 15,and apply the division lemma to get
18 = 15 x 1 + 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 285 and 771 is 3
Notice that 3 = HCF(15,3) = HCF(18,15) = HCF(33,18) = HCF(84,33) = HCF(201,84) = HCF(285,201) = HCF(771,285) .
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Frequently Asked Questions on HCF of 285, 771 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 285, 771?
Answer: HCF of 285, 771 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 285, 771 using Euclid's Algorithm?
Answer: For arbitrary numbers 285, 771 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.