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 991, 771, 724 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 991, 771, 724 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 991, 771, 724 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 991, 771, 724 is 1.
HCF(991, 771, 724) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 991, 771, 724 is 1.
Step 1: Since 991 > 771, we apply the division lemma to 991 and 771, to get
991 = 771 x 1 + 220
Step 2: Since the reminder 771 ≠ 0, we apply division lemma to 220 and 771, to get
771 = 220 x 3 + 111
Step 3: We consider the new divisor 220 and the new remainder 111, and apply the division lemma to get
220 = 111 x 1 + 109
We consider the new divisor 111 and the new remainder 109,and apply the division lemma to get
111 = 109 x 1 + 2
We consider the new divisor 109 and the new remainder 2,and apply the division lemma to get
109 = 2 x 54 + 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 991 and 771 is 1
Notice that 1 = HCF(2,1) = HCF(109,2) = HCF(111,109) = HCF(220,111) = HCF(771,220) = HCF(991,771) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 724 > 1, we apply the division lemma to 724 and 1, to get
724 = 1 x 724 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 724 is 1
Notice that 1 = HCF(724,1) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 991, 771, 724?
Answer: HCF of 991, 771, 724 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 991, 771, 724 using Euclid's Algorithm?
Answer: For arbitrary numbers 991, 771, 724 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.