Highest Common Factor of 288, 168, 721 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 288, 168, 721 i.e. 1 the largest integer that leaves a remainder zero for all numbers.
HCF of 288, 168, 721 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 288, 168, 721 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 288, 168, 721 is 1.
HCF(288, 168, 721) = 1
HCF of 288, 168, 721 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 288, 168, 721 is 1.
Highest Common Factor of 288,168,721 is 1
Step 1: Since 288 > 168, we apply the division lemma to 288 and 168, to get
288 = 168 x 1 + 120
Step 2: Since the reminder 168 ≠ 0, we apply division lemma to 120 and 168, to get
168 = 120 x 1 + 48
Step 3: We consider the new divisor 120 and the new remainder 48, and apply the division lemma to get
120 = 48 x 2 + 24
We consider the new divisor 48 and the new remainder 24, and apply the division lemma to get
48 = 24 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 24, the HCF of 288 and 168 is 24
Notice that 24 = HCF(48,24) = HCF(120,48) = HCF(168,120) = HCF(288,168) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 721 > 24, we apply the division lemma to 721 and 24, to get
721 = 24 x 30 + 1
Step 2: Since the reminder 24 ≠ 0, we apply division lemma to 1 and 24, to get
24 = 1 x 24 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 1, the HCF of 24 and 721 is 1
Notice that 1 = HCF(24,1) = HCF(721,24) .
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Frequently Asked Questions on HCF of 288, 168, 721 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 288, 168, 721?
Answer: HCF of 288, 168, 721 is 1 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 288, 168, 721 using Euclid's Algorithm?
Answer: For arbitrary numbers 288, 168, 721 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.