The GCF is 3.
Answer: 3Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 15 are 1, 3, 5, and 15.The factors of 21 are 1, 3, 7, and 21.The factors of 27 are 1, 3, 9, and 27.The common factors are 1 and 3. Therefore, the greatest common factor is 3.
The greatest factor of 21 and 16 is 21, which is a factor of 21 but not of 16.
The greatest common factor of 6, 15 and 21 is 3. The prime factorization of 6 is 2*3 The prime factorization of 15 is 3*5 The prime factorization of 21 is 3*7 The GCF is then 3, as it is the only common factor.
The common factors of 21 and 42 are 3, 7 and 21. The greatest common factor (GCF) is 21.
21
42 prime factors -----> 2,3,7 105 prime factors -----> 3,5,7 There is 3 and 7 in common : There fore 3*7 = 21; 21 is the greatest common factor.
The Greatest Common Factor of 15, 21, 28: 1
Oh, dude, the greatest common factor of 9, 15, and 21 is 3. It's like the superhero that swoops in to save the day, dividing all those numbers without breaking a sweat. So yeah, 3 is the chosen one in this math problem.
1 and 3
It is: 1
1
The GCF is 3.
The factors of 15 are 3 and 5. The factors of 21 are 3 and 7. So the common factor is 3.
The least common factor of any set of numbers is 1.
The GCF is 3.
The GCF is 3.