Highest Common Factor of 3945, 642 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 3945, 642 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 3945, 642 is 3 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 3945, 642 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 3945, 642 is 3.
HCF(3945, 642) = 3
HCF of 3945, 642 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 3945, 642 is 3.
Highest Common Factor of 3945,642 is 3
Step 1: Since 3945 > 642, we apply the division lemma to 3945 and 642, to get
3945 = 642 x 6 + 93
Step 2: Since the reminder 642 ≠ 0, we apply division lemma to 93 and 642, to get
642 = 93 x 6 + 84
Step 3: We consider the new divisor 93 and the new remainder 84, and apply the division lemma to get
93 = 84 x 1 + 9
We consider the new divisor 84 and the new remainder 9,and apply the division lemma to get
84 = 9 x 9 + 3
We consider the new divisor 9 and the new remainder 3,and apply the division lemma to get
9 = 3 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 3945 and 642 is 3
Notice that 3 = HCF(9,3) = HCF(84,9) = HCF(93,84) = HCF(642,93) = HCF(3945,642) .
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Frequently Asked Questions on HCF of 3945, 642 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 3945, 642?
Answer: HCF of 3945, 642 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 3945, 642 using Euclid's Algorithm?
Answer: For arbitrary numbers 3945, 642 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.