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 381, 602, 221 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 381, 602, 221 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 381, 602, 221 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 381, 602, 221 is 1.
HCF(381, 602, 221) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 381, 602, 221 is 1.
Step 1: Since 602 > 381, we apply the division lemma to 602 and 381, to get
602 = 381 x 1 + 221
Step 2: Since the reminder 381 ≠ 0, we apply division lemma to 221 and 381, to get
381 = 221 x 1 + 160
Step 3: We consider the new divisor 221 and the new remainder 160, and apply the division lemma to get
221 = 160 x 1 + 61
We consider the new divisor 160 and the new remainder 61,and apply the division lemma to get
160 = 61 x 2 + 38
We consider the new divisor 61 and the new remainder 38,and apply the division lemma to get
61 = 38 x 1 + 23
We consider the new divisor 38 and the new remainder 23,and apply the division lemma to get
38 = 23 x 1 + 15
We consider the new divisor 23 and the new remainder 15,and apply the division lemma to get
23 = 15 x 1 + 8
We consider the new divisor 15 and the new remainder 8,and apply the division lemma to get
15 = 8 x 1 + 7
We consider the new divisor 8 and the new remainder 7,and apply the division lemma to get
8 = 7 x 1 + 1
We consider the new divisor 7 and the new remainder 1,and apply the division lemma to get
7 = 1 x 7 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 381 and 602 is 1
Notice that 1 = HCF(7,1) = HCF(8,7) = HCF(15,8) = HCF(23,15) = HCF(38,23) = HCF(61,38) = HCF(160,61) = HCF(221,160) = HCF(381,221) = HCF(602,381) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 221 > 1, we apply the division lemma to 221 and 1, to get
221 = 1 x 221 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 221 is 1
Notice that 1 = HCF(221,1) .
Here are some samples of HCF using Euclid's Algorithm calculations.
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 381, 602, 221?
Answer: HCF of 381, 602, 221 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 381, 602, 221 using Euclid's Algorithm?
Answer: For arbitrary numbers 381, 602, 221 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.