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GCF(12, 15, 18) = 3
The GCF is 3.
The GCF is: 3
The GCF of 12, 15, 18, and 30 is 3.
The GCF is 1.
The LCF is 1. The GCF is 3.
The GCF for 612 and 18 is 18
The GCF is 2.
The GCF is 6.