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What is the greatest common factor of 450 and 420?
30 (30 x 7, 30 x 15)
What is the greatest common factor of 30 64 42 196?
the only factor (divisor) between 30 and 64 are 2, this is also a factor of 42 & 196 working upwards: 1 is always a factor of integers 2 is a factor of all even numbers 3 is a factor of 30 & 42, but not 64 or 196 4 is a factor of 64 & 196, but not 30 or 42 5 is a factor of 30, but not the others 6 is a factor of 30 & 42, but not 64 or 196 7 is a factor of 42, but not the others 8 is a factor of 64, but not the others 9 is not a factor of any of the numbers 10 is a factor of 30, but not the others I could continue, but it gets worse from there, with only occasional numbers being factors...
What are the numbers between 15 and 30 that have 7 as their greatest common factor?
21 and 28.
Between 15 and 30 that have 7 as their GCF?
14 and 21, and 21 and 28 are the number pairs between 15 and 30 that have 7 as their greatest common factor.
Is there a common factor for the numerator and the denominator?
Find the GCF. Example: 30/42 Factor them. 2 x 3 x 5 = 30 2 x 3 x 7 = 42 Select the common factors, 2 x 3 = 6, the GCF Divide them. 30/6 = 5 42/6 = 7 The simplest form is 5/7
