Highest Common Factor of 221, 990, 87 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 221, 990, 87 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 221, 990, 87 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 221, 990, 87 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 221, 990, 87 is 1.
HCF(221, 990, 87) = 1
HCF of 221, 990, 87 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 221, 990, 87 is 1.
Highest Common Factor of 221,990,87 is 1
Step 1: Since 990 > 221, we apply the division lemma to 990 and 221, to get
990 = 221 x 4 + 106
Step 2: Since the reminder 221 ≠ 0, we apply division lemma to 106 and 221, to get
221 = 106 x 2 + 9
Step 3: We consider the new divisor 106 and the new remainder 9, and apply the division lemma to get
106 = 9 x 11 + 7
We consider the new divisor 9 and the new remainder 7,and apply the division lemma to get
9 = 7 x 1 + 2
We consider the new divisor 7 and the new remainder 2,and apply the division lemma to get
7 = 2 x 3 + 1
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 221 and 990 is 1
Notice that 1 = HCF(2,1) = HCF(7,2) = HCF(9,7) = HCF(106,9) = HCF(221,106) = HCF(990,221) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 87 > 1, we apply the division lemma to 87 and 1, to get
87 = 1 x 87 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 87 is 1
Notice that 1 = HCF(87,1) .
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Frequently Asked Questions on HCF of 221, 990, 87 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 221, 990, 87?
Answer: HCF of 221, 990, 87 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 221, 990, 87 using Euclid's Algorithm?
Answer: For arbitrary numbers 221, 990, 87 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.