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Anonymous
The GCF/HCF of 54 and 504 is 18.
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It is: 28
The GCF is 18.
LCM = product/HCF; HCF is 6 so LCM = 12 x 42 = 504
The HCF is 18
HCF is the highest common factor of two or more numbers. HCF of 12 and 54 is 6.