what is the gcf of 30 and 28
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The GCF of 28 and 30 is 2. To calculate the greatest common factor of 28 and 30, we need to factor each number (factors of 28 = 1, 2, 4, 7, 14, 28; factors of 30 = 1, 2, 3, 5, 6, 10, 15, 30) and choose the greatest factor that exactly divides both 28 and 30, i.e., 2.