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You have to have two or more numbers to calculate a GCF (assuming you mean greatest common factor)
For example.
The GCF of 100 and 220 is 20
Because it is the biggest number that goes into 100 AND 220
One way to solve that ( a more difficult way than just looking at it and seeing) is to factor it to its primes.
2*2*5*5 = 100
2*2*5*11 = 220
The two factorizations both include 2*2*5 Which equals 20.
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What is the greatest common factor of 27 and 63?
The GCF of 27 and 63 is 9.The Greatest Common Factor is the highest number that divides exactly into two or more numbers.factors of 27: 1, 3, 9, 27factors of 63: 1, 3, 7, 9, 21, 63The Greatest Common Factor of 27 and 63 is 9.9The GCF is 9.
24 is the greatest common factor of what number?
24 is not the greatest common factor of any single number. Common factors are the factors that two or more numbers have in common. The greatest common factor is the largest factor that two or more numbers have in common. There cannot be any common factors or a greatest common factor of a single number. There must be at least two number for common factors and a greatest common factor. Example: The greatest common factor of 24 and 48 is 24. The greatest common factor of 60 and 144 is 24. The greatest common factor of 240 and 264 is 24.
Why is there no Least Common factor if there is Greatest Common Factor?
The least common factor is always one (1), regardless of what the greatest common factor is.
What are the greatest common factor of 8 and 32?
The greatest common factor of 8 and 32 is 8.
What one number has the greatest common factor of 871?
Answer: None, it is impossible. No single number has a greatest common factor. A "common factor" is a factor that two or more numbers have in common. The "greatest common factor" is the largest factor that two or more numbers have in common.
