Highest Common Factor of 390, 145, 255 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 390, 145, 255 i.e. 5 the largest integer that leaves a remainder zero for all numbers.
HCF of 390, 145, 255 is 5 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 390, 145, 255 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 390, 145, 255 is 5.
HCF(390, 145, 255) = 5
HCF of 390, 145, 255 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 390, 145, 255 is 5.
Highest Common Factor of 390,145,255 is 5
Step 1: Since 390 > 145, we apply the division lemma to 390 and 145, to get
390 = 145 x 2 + 100
Step 2: Since the reminder 145 ≠ 0, we apply division lemma to 100 and 145, to get
145 = 100 x 1 + 45
Step 3: We consider the new divisor 100 and the new remainder 45, and apply the division lemma to get
100 = 45 x 2 + 10
We consider the new divisor 45 and the new remainder 10,and apply the division lemma to get
45 = 10 x 4 + 5
We consider the new divisor 10 and the new remainder 5,and apply the division lemma to get
10 = 5 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 390 and 145 is 5
Notice that 5 = HCF(10,5) = HCF(45,10) = HCF(100,45) = HCF(145,100) = HCF(390,145) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 255 > 5, we apply the division lemma to 255 and 5, to get
255 = 5 x 51 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 5, the HCF of 5 and 255 is 5
Notice that 5 = HCF(255,5) .
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Frequently Asked Questions on HCF of 390, 145, 255 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 390, 145, 255?
Answer: HCF of 390, 145, 255 is 5 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 390, 145, 255 using Euclid's Algorithm?
Answer: For arbitrary numbers 390, 145, 255 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.