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Anonymous
The greatest common factor (GCF) of 15, 45, and 540 is 15.
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The GCF is 15.
Since 15 is a factor of 45, it is automatically the GCF.
GCF(15, 12, 45) = 3
The GCF of 45, 60 and 120 is 15.
The GCF is 5.