Highest Common Factor of 660, 345, 242 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 660, 345, 242 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 660, 345, 242 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 660, 345, 242 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 660, 345, 242 is 1.
HCF(660, 345, 242) = 1
HCF of 660, 345, 242 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 660, 345, 242 is 1.
Highest Common Factor of 660,345,242 is 1
Step 1: Since 660 > 345, we apply the division lemma to 660 and 345, to get
660 = 345 x 1 + 315
Step 2: Since the reminder 345 ≠ 0, we apply division lemma to 315 and 345, to get
345 = 315 x 1 + 30
Step 3: We consider the new divisor 315 and the new remainder 30, and apply the division lemma to get
315 = 30 x 10 + 15
We consider the new divisor 30 and the new remainder 15, and apply the division lemma to get
30 = 15 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 15, the HCF of 660 and 345 is 15
Notice that 15 = HCF(30,15) = HCF(315,30) = HCF(345,315) = HCF(660,345) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 242 > 15, we apply the division lemma to 242 and 15, to get
242 = 15 x 16 + 2
Step 2: Since the reminder 15 ≠ 0, we apply division lemma to 2 and 15, to get
15 = 2 x 7 + 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 15 and 242 is 1
Notice that 1 = HCF(2,1) = HCF(15,2) = HCF(242,15) .
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Frequently Asked Questions on HCF of 660, 345, 242 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 660, 345, 242?
Answer: HCF of 660, 345, 242 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 660, 345, 242 using Euclid's Algorithm?
Answer: For arbitrary numbers 660, 345, 242 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.