The greatest common factor between 30,75, and 120 is 15.
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150 30:60,90,120,150,180... 75:150...
The GCF is 15.
The GCF is 3.
The GCF of 90 and 120 is 30. The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90. The factors of 120 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, and 120. The GCF of 90 and 120 is 30.
The GCF is 15.