Highest Common Factor of 630, 990, 784 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 630, 990, 784 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 630, 990, 784 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 630, 990, 784 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 630, 990, 784 is 2.
HCF(630, 990, 784) = 2
HCF of 630, 990, 784 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 630, 990, 784 is 2.
Highest Common Factor of 630,990,784 is 2
Step 1: Since 990 > 630, we apply the division lemma to 990 and 630, to get
990 = 630 x 1 + 360
Step 2: Since the reminder 630 ≠ 0, we apply division lemma to 360 and 630, to get
630 = 360 x 1 + 270
Step 3: We consider the new divisor 360 and the new remainder 270, and apply the division lemma to get
360 = 270 x 1 + 90
We consider the new divisor 270 and the new remainder 90, and apply the division lemma to get
270 = 90 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 90, the HCF of 630 and 990 is 90
Notice that 90 = HCF(270,90) = HCF(360,270) = HCF(630,360) = HCF(990,630) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 784 > 90, we apply the division lemma to 784 and 90, to get
784 = 90 x 8 + 64
Step 2: Since the reminder 90 ≠ 0, we apply division lemma to 64 and 90, to get
90 = 64 x 1 + 26
Step 3: We consider the new divisor 64 and the new remainder 26, and apply the division lemma to get
64 = 26 x 2 + 12
We consider the new divisor 26 and the new remainder 12,and apply the division lemma to get
26 = 12 x 2 + 2
We consider the new divisor 12 and the new remainder 2,and apply the division lemma to get
12 = 2 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 90 and 784 is 2
Notice that 2 = HCF(12,2) = HCF(26,12) = HCF(64,26) = HCF(90,64) = HCF(784,90) .
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Frequently Asked Questions on HCF of 630, 990, 784 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 630, 990, 784?
Answer: HCF of 630, 990, 784 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 630, 990, 784 using Euclid's Algorithm?
Answer: For arbitrary numbers 630, 990, 784 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.