The GCF is 9.
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The Greatest Common Factor of 36, 45, 54: 9
Greatest Common Factor (GCF) for 36 45 is 9.Least Common Multiple (LCM) for 36 45 is 180.
45
The Greatest Common Factor (GCF) is: 1
By finding the factors in both numbers and then finding the one that is greatest in common. For example the G.C.F for 45 and 36 is 9.