Highest Common Factor of 91, 390, 210 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 91, 390, 210 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 91, 390, 210 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 91, 390, 210 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 91, 390, 210 is 1.
HCF(91, 390, 210) = 1
HCF of 91, 390, 210 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 91, 390, 210 is 1.
Highest Common Factor of 91,390,210 is 1
Step 1: Since 390 > 91, we apply the division lemma to 390 and 91, to get
390 = 91 x 4 + 26
Step 2: Since the reminder 91 ≠ 0, we apply division lemma to 26 and 91, to get
91 = 26 x 3 + 13
Step 3: We consider the new divisor 26 and the new remainder 13, and apply the division lemma to get
26 = 13 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 13, the HCF of 91 and 390 is 13
Notice that 13 = HCF(26,13) = HCF(91,26) = HCF(390,91) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 210 > 13, we apply the division lemma to 210 and 13, to get
210 = 13 x 16 + 2
Step 2: Since the reminder 13 ≠ 0, we apply division lemma to 2 and 13, to get
13 = 2 x 6 + 1
Step 3: 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 13 and 210 is 1
Notice that 1 = HCF(2,1) = HCF(13,2) = HCF(210,13) .
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Frequently Asked Questions on HCF of 91, 390, 210 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 91, 390, 210?
Answer: HCF of 91, 390, 210 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 91, 390, 210 using Euclid's Algorithm?
Answer: For arbitrary numbers 91, 390, 210 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.