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 99, 990, 664 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 99, 990, 664 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 99, 990, 664 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 99, 990, 664 is 1.
HCF(99, 990, 664) = 1
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 99, 990, 664 is 1.
Step 1: Since 990 > 99, we apply the division lemma to 990 and 99, to get
990 = 99 x 10 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 99, the HCF of 99 and 990 is 99
Notice that 99 = HCF(990,99) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 664 > 99, we apply the division lemma to 664 and 99, to get
664 = 99 x 6 + 70
Step 2: Since the reminder 99 ≠ 0, we apply division lemma to 70 and 99, to get
99 = 70 x 1 + 29
Step 3: We consider the new divisor 70 and the new remainder 29, and apply the division lemma to get
70 = 29 x 2 + 12
We consider the new divisor 29 and the new remainder 12,and apply the division lemma to get
29 = 12 x 2 + 5
We consider the new divisor 12 and the new remainder 5,and apply the division lemma to get
12 = 5 x 2 + 2
We consider the new divisor 5 and the new remainder 2,and apply the division lemma to get
5 = 2 x 2 + 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 99 and 664 is 1
Notice that 1 = HCF(2,1) = HCF(5,2) = HCF(12,5) = HCF(29,12) = HCF(70,29) = HCF(99,70) = HCF(664,99) .
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 99, 990, 664?
Answer: HCF of 99, 990, 664 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 99, 990, 664 using Euclid's Algorithm?
Answer: For arbitrary numbers 99, 990, 664 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.