Highest Common Factor of 81, 90, 930, 989 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 81, 90, 930, 989 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 81, 90, 930, 989 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 81, 90, 930, 989 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 81, 90, 930, 989 is 1.
HCF(81, 90, 930, 989) = 1
HCF of 81, 90, 930, 989 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 81, 90, 930, 989 is 1.
Highest Common Factor of 81,90,930,989 is 1
Step 1: Since 90 > 81, we apply the division lemma to 90 and 81, to get
90 = 81 x 1 + 9
Step 2: Since the reminder 81 ≠ 0, we apply division lemma to 9 and 81, to get
81 = 9 x 9 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 9, the HCF of 81 and 90 is 9
Notice that 9 = HCF(81,9) = HCF(90,81) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 930 > 9, we apply the division lemma to 930 and 9, to get
930 = 9 x 103 + 3
Step 2: Since the reminder 9 ≠ 0, we apply division lemma to 3 and 9, to get
9 = 3 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 9 and 930 is 3
Notice that 3 = HCF(9,3) = HCF(930,9) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 989 > 3, we apply the division lemma to 989 and 3, to get
989 = 3 x 329 + 2
Step 2: Since the reminder 3 ≠ 0, we apply division lemma to 2 and 3, to get
3 = 2 x 1 + 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 3 and 989 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(989,3) .
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Frequently Asked Questions on HCF of 81, 90, 930, 989 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 81, 90, 930, 989?
Answer: HCF of 81, 90, 930, 989 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 81, 90, 930, 989 using Euclid's Algorithm?
Answer: For arbitrary numbers 81, 90, 930, 989 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.