3: 1,3
9: 1, 3
3 is prime so its only factors are 1 and 3.
So obviously you can find it out
9: 1, 3, 9 are the first three factors for 9.
And 3 has the factors of: 1, 3
And 9 has the factors of: 1, 3, 9
(Im only listing 3)
And our common factors are 1 and 3.
If this is incorrect srry ♀️
Your homework is tripping because 3 cant have more than 3 or more factors since its prime
