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 75, 90, 28, 694 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 75, 90, 28, 694 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 75, 90, 28, 694 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 75, 90, 28, 694 is 1.
HCF(75, 90, 28, 694) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 75, 90, 28, 694 is 1.
Step 1: Since 90 > 75, we apply the division lemma to 90 and 75, to get
90 = 75 x 1 + 15
Step 2: Since the reminder 75 ≠ 0, we apply division lemma to 15 and 75, to get
75 = 15 x 5 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 15, the HCF of 75 and 90 is 15
Notice that 15 = HCF(75,15) = HCF(90,75) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 28 > 15, we apply the division lemma to 28 and 15, to get
28 = 15 x 1 + 13
Step 2: Since the reminder 15 ≠ 0, we apply division lemma to 13 and 15, to get
15 = 13 x 1 + 2
Step 3: We consider the new divisor 13 and the new remainder 2, and apply the division lemma to get
13 = 2 x 6 + 1
We consider the new divisor 2 and the new remainder 1, and apply the division lemma to get
2 = 1 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 15 and 28 is 1
Notice that 1 = HCF(2,1) = HCF(13,2) = HCF(15,13) = HCF(28,15) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 694 > 1, we apply the division lemma to 694 and 1, to get
694 = 1 x 694 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 1 and 694 is 1
Notice that 1 = HCF(694,1) .
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 75, 90, 28, 694?
Answer: HCF of 75, 90, 28, 694 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 75, 90, 28, 694 using Euclid's Algorithm?
Answer: For arbitrary numbers 75, 90, 28, 694 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.