GCF of 25/65, 36/78, 29/30, 81/55
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Use our free GCF of Fractions Calculator tool to compute the GCF of 25/65, 36/78, 29/30, 81/55 i.e 1/4290 easily. The following is the detailed procedure to determine the greatest common factor of fractions 25/65, 36/78, 29/30, 81/55.
Enter two or more fractions separated by "commas"
Ex: 2/3, 5/7 or 3/5, 5/9, 7/3
What is the GCF of 25/65,36/78,29/30,81/55?
Given fractions are 25/65,36/78,29/30,81/55
To find the GCF of fractions, we have to find the GCF of numerator numbers and LCM of denominator numbers. Its formula is given by
GCF of Fraction = Greatest Common Factor of Numerator/Least Common Multiple of Denominators
In the fractions 25/65,36/78,29/30,81/55, numerators are 25,36,29,81
Denominators are 65,78,30,55
The GCF of 25,36,29,81 is 1 .
LCM of 65,78,30,55 is 4290.
The greatest common factor of 25/65,36/78,29/30,81/55 = [GCF of 25,36,29,81]/[LCM of 65,78,30,55]= 1/4290
Therefore, the GCF of 25/65,36/78,29/30,81/55 is 1/4290.
To find the highest common factor of 25,36,29,81, we have to find the factors of both numbers and list the highest common factor.
The factors of 25 are 1, 5, 25
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36
The factors of 29 are 1, 29
The factors of 81 are 1, 3, 9, 27, 81
The HCF of 25,36,29,81 is 1.
Lets's calculate GCF of 25,36,29,81
∴ So GCF of numbers is 1 because of no common factors present between them.
Greatest Common Factor of 25,36,29,81 By Matching Biggest Common Factor Method
Now, list down the factors of 25
:1,5,25
Now, list down the factors of 36
:1,2,3,4,6,9,12,18,36
Now, list down the factors of 29
:1,29
Now, list down the factors of 81
:1,3,9,27,81
Greatest Common Factor
We found the factors 25,36,29,81 . The biggest common factor number is the GCF number.
So the greatest common factor 25,36,29,81 is 1.
Lets's calculate LCM of 65,78,30,55
| 2 | 65, 78, 30, 55 |
| 3 | 65, 39, 15, 55 |
| 5 | 65, 13, 5, 55 |
| 13 | 13, 13, 1, 11 |
| 1, 1, 1, 11 |
∴ So the LCM of the given numbers is 2 x 3 x 5 x 13 x 1 x 1 x 1 x 11 = 4290
Thus GCF of Fractions = GCF of Numerators/LCM of Denominators = 1/4290
Therefore, the GCF of Fractions 25/65,36/78,29/30,81/55 is 1/4290
Least Common Multiple of 65,78,30,55 with GCF Formula
The formula of LCM is LCM(a1,a2,a3....,an) = ( a1 × a2 × a3 × .... × an) / GCF(a1,a2,a3....,an) x common factors(if more than 2 numbers have common factors).
We need to calculate greatest common factor of 65,78,30,55 and common factors if more than two numbers have common factor, than apply into the LCM equation.
GCF(65,78,30,55) = 1
common factors(in case of two or more numbers have common factors) = 1950
GCF(65,78,30,55) x common factors =1 x 1950 = 1950
LCM(65,78,30,55) = ( 65 × 78 × 30 × 55 ) / 1950
LCM(65,78,30,55) = 8365500 / 1950
LCM(65,78,30,55) = 4290
GCF of Fractions Calculation Examples
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FAQs on GCF of Fractions of 25/65, 36/78, 29/30, 81/55
1. What is the HCF of 25,36,29,81?
The HCF of 25,36,29,81 is 1
2. What is the GCF of a fraction?
The GCF of a fraction is defined as the greatest fraction that divides exactly into 2 or more fractions.
3. How to find GCF in Fractions?
Answer: GCF of fractions can be found using the simple formula GCF of Fractions = GCF of Numerators/LCM of Denominators.
4. What is the GCF of Fractions for 25/65, 36/78, 29/30, 81/55?
Answer: GCF of Numerators as per given numbers 25/65, 36/78, 29/30, 81/55 is
GCF of Numerators i.e. for 25,36,29,81 is 1
LCM of denominators i.e. for 65,78,30,55 is 4290.
Thus, GCF of Fractions is 1/4290.Finally, GCF of Fractions for 25/65, 36/78, 29/30, 81/55 is 1/4290.