Highest Common Factor of 355, 138, 668 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 355, 138, 668 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 355, 138, 668 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 355, 138, 668 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 355, 138, 668 is 1.
HCF(355, 138, 668) = 1
HCF of 355, 138, 668 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 355, 138, 668 is 1.
Highest Common Factor of 355,138,668 is 1
Step 1: Since 355 > 138, we apply the division lemma to 355 and 138, to get
355 = 138 x 2 + 79
Step 2: Since the reminder 138 ≠ 0, we apply division lemma to 79 and 138, to get
138 = 79 x 1 + 59
Step 3: We consider the new divisor 79 and the new remainder 59, and apply the division lemma to get
79 = 59 x 1 + 20
We consider the new divisor 59 and the new remainder 20,and apply the division lemma to get
59 = 20 x 2 + 19
We consider the new divisor 20 and the new remainder 19,and apply the division lemma to get
20 = 19 x 1 + 1
We consider the new divisor 19 and the new remainder 1,and apply the division lemma to get
19 = 1 x 19 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 355 and 138 is 1
Notice that 1 = HCF(19,1) = HCF(20,19) = HCF(59,20) = HCF(79,59) = HCF(138,79) = HCF(355,138) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 668 > 1, we apply the division lemma to 668 and 1, to get
668 = 1 x 668 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 668 is 1
Notice that 1 = HCF(668,1) .
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Frequently Asked Questions on HCF of 355, 138, 668 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 355, 138, 668?
Answer: HCF of 355, 138, 668 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 355, 138, 668 using Euclid's Algorithm?
Answer: For arbitrary numbers 355, 138, 668 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.