16, 32 and 48
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The GCF is 16.
It must be less than or equal to the smallest of the set of numbers whose GCF you are trying to obtain. So it must be less than or equal to 16. Furthermore, it is not 16 because 16 is not a factor of 42. Therefore, it must be less than 16.
3 6 and 9 would work but there are infinitely many solutions.
Well, isn't that just a happy little question! Let's find the Greatest Common Factor (GCF) of 16, 28, and 48 together. We start by listing the factors of each number, then we look for the largest number that is a factor of all three. Just like painting a beautiful landscape, finding the GCF is all about patience and taking it one step at a time.
16