As you can see when you list out the factors of each number, 3 is the greatest number that 21 and 75 divides into.
What are the factors of 21 and 75?
The Greatest Common Factor (GCF) for 21 and 75, notation CGF(21,75), is 3. Explanation: The factors of 21 are 1,3,7,21; The factors of 75 are 1,3,5,15,25,75.
What is the greatest common factor 20 and 75?
Detailed Answer: The Greatest Common Factor (GCF) for 20 and 75, notation CGF(20,75), is 5.
What number goes into 75 and 20?
The common factors of 75 and 20 are 5, 1, intersecting the two sets above. In the intersection factors of 75 ∩ factors of 20 the greatest element is 5. Therefore, the greatest common factor of 75 and 20 is 5.
How to calculate the greatest common factor of 75, 8, and 21?
Since there are no common prime factors between the numbers above, this means the greatest common factor is 1: The final method for calculating the GCF of 75, 8, and 21 is to use Euclid’s algorithm. This is a more complicated way of calculating the greatest common factor and is really only used by GCD calculators.
Which is the greatest common factor of a set of numbers?
What is the Greatest Common Factor? The greatest common factor (GCF or GCD or HCF) of a set of whole numbers is the largest positive integer that divides evenly into all numbers with zero remainder. For example, for the set of numbers 18, 30 and 42 the GCF = 6. Greatest Common Factor of 0
What are the prime factors for 75 and 8?
List out all of the prime factors for each number: 1 Prime Factors for 75: 3, 5, and 5 2 Prime Factors for 8: 2, 2, and 2 3 Prime Factors for 21: 3 and 7
Which is the greatest common factor of 20 and 10?
Now let’s find the GCF of our third value, 20, and our result, 10. GCF (20,10) So, the greatest common factor of 20 and 10 is 10. Therefore, the greatest common factor of 120, 50 and 20 is 10. So, the the greatest common factor of 182664 and 154875 is 177. So, the greatest common factor of 177 and 137688 is 3.
