Answer:
The greatest common factor is 5
Step-by-step explanation:
the factors of 10 are 1, 2, 5, 10
The factors of 15 are 1, 3, 5, 15
The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30
The one number they all have is 5 so the GCF of 10, 15 and 30
would be 5.
