Respuesta :
The GCF or HCF of 54 and 24 is 6
I found this out by listing the factors of each number:
54 - 1, 2, 6, 9, 27, 54
24 - 1, 2, 4, 6, 8, 12, 24
Therefore the GCF/HCF is 6 because it is the highest number that is shown in both lists of their factors. ;)