The GCF is 6.
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The GCF of 16, 24, 30, and 42 is 2.
The greatest common factor of 18, 30, and 42 is 2.
The LCM is 840.
6 5*6=30 7*6=42 8*6=48
The GCF of 30, 42, and 48 is 6.Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30.Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42.Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.GCF (30, 42, 48) = 6