Highest Common Factor of 90, 45, 15, 781 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 90, 45, 15, 781 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 90, 45, 15, 781 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 90, 45, 15, 781 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 90, 45, 15, 781 is 1.
HCF(90, 45, 15, 781) = 1
HCF of 90, 45, 15, 781 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 90, 45, 15, 781 is 1.
Highest Common Factor of 90,45,15,781 is 1
Step 1: Since 90 > 45, we apply the division lemma to 90 and 45, to get
90 = 45 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 45, the HCF of 90 and 45 is 45
Notice that 45 = HCF(90,45) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 45 > 15, we apply the division lemma to 45 and 15, to get
45 = 15 x 3 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 15, the HCF of 45 and 15 is 15
Notice that 15 = HCF(45,15) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 781 > 15, we apply the division lemma to 781 and 15, to get
781 = 15 x 52 + 1
Step 2: Since the reminder 15 ≠ 0, we apply division lemma to 1 and 15, to get
15 = 1 x 15 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 15 and 781 is 1
Notice that 1 = HCF(15,1) = HCF(781,15) .
HCF using Euclid's Algorithm Calculation Examples
Here are some samples of HCF using Euclid's Algorithm calculations.
Frequently Asked Questions on HCF of 90, 45, 15, 781 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 90, 45, 15, 781?
Answer: HCF of 90, 45, 15, 781 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 90, 45, 15, 781 using Euclid's Algorithm?
Answer: For arbitrary numbers 90, 45, 15, 781 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.