Respuesta :

Answer:

a) 4

Step-by-step explanation:

Factors of 20:

1 2 4 5 10 20

Factors of 24:

1 2 3 4 6 8 24

Answer:

A) 4.

Step-by-step explanation:

20 = 2*2*5

24 = 2*2*2*2

Picking out the common factors, the GCF = 2*2 = 4.