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 84, 21, 61, 311 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 84, 21, 61, 311 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 84, 21, 61, 311 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 84, 21, 61, 311 is 1.
HCF(84, 21, 61, 311) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 84, 21, 61, 311 is 1.
Step 1: Since 84 > 21, we apply the division lemma to 84 and 21, to get
84 = 21 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 21, the HCF of 84 and 21 is 21
Notice that 21 = HCF(84,21) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 61 > 21, we apply the division lemma to 61 and 21, to get
61 = 21 x 2 + 19
Step 2: Since the reminder 21 ≠ 0, we apply division lemma to 19 and 21, to get
21 = 19 x 1 + 2
Step 3: We consider the new divisor 19 and the new remainder 2, and apply the division lemma to get
19 = 2 x 9 + 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 21 and 61 is 1
Notice that 1 = HCF(2,1) = HCF(19,2) = HCF(21,19) = HCF(61,21) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 311 > 1, we apply the division lemma to 311 and 1, to get
311 = 1 x 311 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 311 is 1
Notice that 1 = HCF(311,1) .
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 84, 21, 61, 311?
Answer: HCF of 84, 21, 61, 311 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 84, 21, 61, 311 using Euclid's Algorithm?
Answer: For arbitrary numbers 84, 21, 61, 311 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.