Respuesta :

TSO
HCF, or highest common factor

List all the factors:

48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
64: 1, 2, 4, 8, 16, 32, 64

The HCF is 16

LCM, or least common multiple

List the beginning multiples

48: 48, 96, 144, 192
64: 64, 128, 192, 256

The LCM is 192