1.
Based on the factor trees, what is the greatest common factor of 8 and 20?
A.
2
B.
20
C.
8
D.
4
Hint
2.
What is the greatest common factor of 25
a
2
b
and 5
ab
2
?
A.
5
ab
2
B.
5
a
2
b
2
C.
5
ab
D.
5
Hint
3.
What is the greatest common factor of 16
x
2
and 12
x
?
A.
4
x
2
B.
12
x
C.
16
x
2
D.
4
x
Hint
4.
What is the greatest common factor of 36, 54, and 90.
A.
9
B.
36
C.
6
D.
18
Hint
5.
What is the greatest common factor of 14
p
2
q
and 42
p
3
q
2
?
A.
14
pq
B.
14
p
2
q
C.
7
pq
D.
7
p
2
q
2
Hint