Highest Common Factor of 72, 90, 98, 720 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 72, 90, 98, 720 i.e. 2 the largest integer that leaves a remainder zero for all numbers.
HCF of 72, 90, 98, 720 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 72, 90, 98, 720 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 72, 90, 98, 720 is 2.
HCF(72, 90, 98, 720) = 2
HCF of 72, 90, 98, 720 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 72, 90, 98, 720 is 2.
Highest Common Factor of 72,90,98,720 is 2
Step 1: Since 90 > 72, we apply the division lemma to 90 and 72, to get
90 = 72 x 1 + 18
Step 2: Since the reminder 72 ≠ 0, we apply division lemma to 18 and 72, to get
72 = 18 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 18, the HCF of 72 and 90 is 18
Notice that 18 = HCF(72,18) = HCF(90,72) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 98 > 18, we apply the division lemma to 98 and 18, to get
98 = 18 x 5 + 8
Step 2: Since the reminder 18 ≠ 0, we apply division lemma to 8 and 18, to get
18 = 8 x 2 + 2
Step 3: We consider the new divisor 8 and the new remainder 2, and apply the division lemma to get
8 = 2 x 4 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 18 and 98 is 2
Notice that 2 = HCF(8,2) = HCF(18,8) = HCF(98,18) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 720 > 2, we apply the division lemma to 720 and 2, to get
720 = 2 x 360 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 2, the HCF of 2 and 720 is 2
Notice that 2 = HCF(720,2) .
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Frequently Asked Questions on HCF of 72, 90, 98, 720 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 72, 90, 98, 720?
Answer: HCF of 72, 90, 98, 720 is 2 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 72, 90, 98, 720 using Euclid's Algorithm?
Answer: For arbitrary numbers 72, 90, 98, 720 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.