30
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The greatest common factor (GCF) of 240, 300, and 450 is 30. To find the GCF, you need to determine the common factors of each number and then identify the largest number that divides evenly into all three numbers. In this case, the common factors of 240, 300, and 450 are 1, 2, 3, 5, 6, 10, 15, and 30, with 30 being the largest common factor.
100 is the greatest common factor between 300 and 400
The greatest common factor (GCF) is: 100
GCF(150, 200, 300) = 50
150
The GCF is 12.