1.
Find the greatest common factor of 168 and 288.
A.
2
B.
36
C.
24
D.
48
Hint
2.
What is the greatest common factor of 45, 75, and 135?
A.
5
B.
9
C.
15
D.
25
Hint
3.
Find the greatest common factor of 64
ab
3
c
2
and 48
a
2
b
2
c
.
A.
16
ab
2
c
B.
16
abc
C.
8
ab
3
c
D.
8
a
2
b
2
c
2
Hint
4.
What is the greatest common factor of 18
mn
2
, 54
m
4
, and 80
n
3
?
A.
2
mn
2
B.
9
mn
C.
18
m
2
n
3
D.
2
Hint
5.
Are 12 and 25 relatively prime? Explain.
A.
Yes; 12 is even and 25 is odd.
B.
No; 12 and 25 are not prime numbers.
C.
No; 12 has three prime factors.
D.
Yes; 12 and 25 have no common factors.
Hint