1.
Based on the factor trees, what is the greatest common factor of 8 and 20?
A.
20
B.
4
C.
8
D.
2
Hint
2.
What is the greatest common factor of 22, 66, and 110?
A.
2
B.
11
C.
22
D.
66
Hint
3.
What is the greatest common factor of 25
a
2
b
and 5
ab
2
?
A.
5
ab
B.
5
a
2
b
2
C.
5
ab
2
D.
5
Hint
4.
What is the greatest common factor of 39 and 18?
A.
13
B.
6
C.
3
D.
9
Hint
5.
What is the greatest common factor of 20
x
2
and 32
x
3
?
A.
8
x
B.
4
x
C.
4
x
2
D.
8
x
3
Hint