Highest Common Factor of 15, 90, 249, 215 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 15, 90, 249, 215 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 15, 90, 249, 215 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 15, 90, 249, 215 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 15, 90, 249, 215 is 1.
HCF(15, 90, 249, 215) = 1
HCF of 15, 90, 249, 215 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 15, 90, 249, 215 is 1.
Highest Common Factor of 15,90,249,215 is 1
Step 1: Since 90 > 15, we apply the division lemma to 90 and 15, to get
90 = 15 x 6 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 15, the HCF of 15 and 90 is 15
Notice that 15 = HCF(90,15) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 249 > 15, we apply the division lemma to 249 and 15, to get
249 = 15 x 16 + 9
Step 2: Since the reminder 15 ≠ 0, we apply division lemma to 9 and 15, to get
15 = 9 x 1 + 6
Step 3: We consider the new divisor 9 and the new remainder 6, and apply the division lemma to get
9 = 6 x 1 + 3
We consider the new divisor 6 and the new remainder 3, and apply the division lemma to get
6 = 3 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 15 and 249 is 3
Notice that 3 = HCF(6,3) = HCF(9,6) = HCF(15,9) = HCF(249,15) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 215 > 3, we apply the division lemma to 215 and 3, to get
215 = 3 x 71 + 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 215 is 1
Notice that 1 = HCF(2,1) = HCF(3,2) = HCF(215,3) .
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Frequently Asked Questions on HCF of 15, 90, 249, 215 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 15, 90, 249, 215?
Answer: HCF of 15, 90, 249, 215 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 15, 90, 249, 215 using Euclid's Algorithm?
Answer: For arbitrary numbers 15, 90, 249, 215 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.