Finding Common Factors Review

What is the greatest common factor (GCF) of $$12$$ and $$18$$ ?

Which of the following is a common factor of $$24$$ and $$36$$ ?

Find the greatest common factor of $$15$$ , $$25$$ , and $$35$$ .

Which number is a common factor of both $$16$$ and $$20$$ ?

What is the greatest common factor of $$8$$ , $$12$$ , and $$20$$ ?

Which of the following is NOT a common factor of $$30$$ and $$45$$ ?

What is the greatest common factor of $$9$$ and $$27$$ ?

Which number is a common factor of $$14$$ , $$21$$ , and $$28$$ ?

Find the greatest common factor of $$32$$ and $$48$$ .

Which of the following is a common factor of $$18$$ and $$24$$ ?