Highest Common Factor of 390, 490, 816 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 390, 490, 816 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 390, 490, 816 is 2 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 390, 490, 816 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 390, 490, 816 is 2.
HCF(390, 490, 816) = 2
HCF of 390, 490, 816 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 390, 490, 816 is 2.
Highest Common Factor of 390,490,816 is 2
Step 1: Since 490 > 390, we apply the division lemma to 490 and 390, to get
490 = 390 x 1 + 100
Step 2: Since the reminder 390 ≠ 0, we apply division lemma to 100 and 390, to get
390 = 100 x 3 + 90
Step 3: We consider the new divisor 100 and the new remainder 90, and apply the division lemma to get
100 = 90 x 1 + 10
We consider the new divisor 90 and the new remainder 10, and apply the division lemma to get
90 = 10 x 9 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 10, the HCF of 390 and 490 is 10
Notice that 10 = HCF(90,10) = HCF(100,90) = HCF(390,100) = HCF(490,390) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 816 > 10, we apply the division lemma to 816 and 10, to get
816 = 10 x 81 + 6
Step 2: Since the reminder 10 ≠ 0, we apply division lemma to 6 and 10, to get
10 = 6 x 1 + 4
Step 3: We consider the new divisor 6 and the new remainder 4, and apply the division lemma to get
6 = 4 x 1 + 2
We consider the new divisor 4 and the new remainder 2, and apply the division lemma to get
4 = 2 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 10 and 816 is 2
Notice that 2 = HCF(4,2) = HCF(6,4) = HCF(10,6) = HCF(816,10) .
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Frequently Asked Questions on HCF of 390, 490, 816 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 390, 490, 816?
Answer: HCF of 390, 490, 816 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 390, 490, 816 using Euclid's Algorithm?
Answer: For arbitrary numbers 390, 490, 816 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.