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What is the sum of the common factors of 12 and 20?
1 + 2 + 4 = 7
List the common factors of 28 and 84?
The common factors are: 1, 2, 4, 7, 14, 28
What is the greatest common factor of 4 and 7?
The word "greatest" is a superlative. What that means is that there can only be one gcf. So there are not greatest common factors of 4 and 7, there is a GCF, which is 28.
What is the greatest common factor of 4 7 8 and 14?
Because 7 is a prime number, its only factors are 1 and 7. 7 is not a factor of 4 or 8, so 1 must be the only factor common to all four numbers. To work it out in detail: Factors of 4: 1 2 4 Factors of 7: 1 7 Factors of 8: 1 2 4 8 Factors of 14: 1 2 7 14 The GCF of 4, 7, 8, and 14 is 1
What are the common factors of 56 and 35?
To find common factors, find all the factors of each number. Then a common factor is any number that appears in both lists. Factors of 56 1, 2, 4, 7, 8, 14, 28, 56 Factors of 35 1, 5, 7, 35 Therefore the common factors of 56 and 35 are 1 and 7.
