Highest Common Factor of 855, 745, 768 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 855, 745, 768 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 855, 745, 768 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 855, 745, 768 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 855, 745, 768 is 1.
HCF(855, 745, 768) = 1
HCF of 855, 745, 768 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 855, 745, 768 is 1.
Highest Common Factor of 855,745,768 is 1
Step 1: Since 855 > 745, we apply the division lemma to 855 and 745, to get
855 = 745 x 1 + 110
Step 2: Since the reminder 745 ≠ 0, we apply division lemma to 110 and 745, to get
745 = 110 x 6 + 85
Step 3: We consider the new divisor 110 and the new remainder 85, and apply the division lemma to get
110 = 85 x 1 + 25
We consider the new divisor 85 and the new remainder 25,and apply the division lemma to get
85 = 25 x 3 + 10
We consider the new divisor 25 and the new remainder 10,and apply the division lemma to get
25 = 10 x 2 + 5
We consider the new divisor 10 and the new remainder 5,and apply the division lemma to get
10 = 5 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 855 and 745 is 5
Notice that 5 = HCF(10,5) = HCF(25,10) = HCF(85,25) = HCF(110,85) = HCF(745,110) = HCF(855,745) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 768 > 5, we apply the division lemma to 768 and 5, to get
768 = 5 x 153 + 3
Step 2: Since the reminder 5 ≠ 0, we apply division lemma to 3 and 5, to get
5 = 3 x 1 + 2
Step 3: We consider the new divisor 3 and the new remainder 2, and apply the division lemma to get
3 = 2 x 1 + 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 5 and 768 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(5,3) = HCF(768,5) .
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Frequently Asked Questions on HCF of 855, 745, 768 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 855, 745, 768?
Answer: HCF of 855, 745, 768 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 855, 745, 768 using Euclid's Algorithm?
Answer: For arbitrary numbers 855, 745, 768 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.
