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What is the greatest common factor of 21 42 49?
To find the greatest common factor of 21, 42, and 49, we first need to find the prime factors of each number. The prime factors of 21 are 3 and 7, the prime factors of 42 are 2, 3, and 7, and the prime factors of 49 are 7 and 7. The greatest common factor is the product of the common prime factors raised to the lowest power they appear in any of the numbers, which in this case is 7. Therefore, the greatest common factor of 21, 42, and 49 is 7.
What is the greatest common factor of 6 15 and 21?
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.
What is the greatest common factor of 21 and 306?
The greatest common factor (GCF) of 21 and 306 is 3. To find the GCF, you need to identify the factors of each number. The factors of 21 are 1, 3, 7, and 21, while the factors of 306 are 1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, and 306. The largest number that both 21 and 306 share as a factor is 3, making it the greatest common factor.
What is the greatest common factor of 6 and 21?
The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. To find the GCF of 6 and 21, you can list the factors of each number and identify the largest factor they have in common. The factors of 6 are 1, 2, 3, and 6, while the factors of 21 are 1, 3, 7, and 21. The greatest common factor of 6 and 21 is 3.
What is the greatest common factor of 6 and 24?
6 is a factor of 24, and the largest factor of 6 is 6 itself, so the greatest common factor is 6.The factors of 6 are 1, 2, 3, and 6.The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.The common factors are 1, 2, 3, and 6.The greatest common factor can also be determined by multiplying the prime factors they have in common.The prime factors of 6 are 2 and 3.The prime factors of 24 are 2, 2, 2, and 3.The common prime factors are 2 and 3, so the greatest common factor is 2 x 3 = 6.the GCF of 6 and 24 is 66:1,2,3,624:1,2,3,4,6the greats and most common factor is 66Since 6 is a factor of 24, it is automatically the GCF.
