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The GCF is 6.
The GCF is 12.
15
The HCF of 48 and 72 is 24. The LCM is 144.
60, 72, 84, 90 and 96 each have twelve factors.
The hcf of 60 and 72 is 12
12
It should be 6
30
It is 30 because it's the highest common factor of 60 and 90
The GCF of 60 and 90 is 30.
60
The HCF would be 6