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It is 6
the HCF is 6
HCF is the highest common factor of two or more numbers. HCF of 12 and 54 is 6.
The GCF is 6.
6
3
None. But 4 and 6 have a LCM (not LMC) of 12 and HCF of 2.
The GCF/HCF of 12 and 90 is 6.
36 and 6 18 and 12