Respuesta :

Answer:

1, 2, 3, 9

Step-by-step explanation:

They are all factors of 18 and 27.

Tested

Answer:

The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3, and 9.

Step-by-step explanation: