Respuesta :

the greatest common factor of 24 and 40 is a 8

Answer: 8 because 12 can be 12, 24, 36, 48 not 40. 10 can be 10, 20, 30, 40 not 24. 8 can be 8, 16, 24, 32, 40, which contains, 24 and 40, and 8 is greater than 4 so there is your answer, 8.