1.
What are the prime factors of 120?
A.
2, 2, 30
B.
2, 60
C.
2, 3, 5
D.
2, 2, 2, 3, 5
Hint
2.
Which of the following numbers is prime?
A.
15
B.
5
C.
1
D.
9
Hint
3.
Which of the following numbers is composite?
A.
9
B.
31
C.
1
D.
23
Hint
4.
Write the prime factorization of 1500.
A.
2
2
× 3 × 5
2
× 10
2
B.
2
2
× 3 × 5
3
C.
2
2
× 3 × 5
2
D.
2 × 3 × 5
Hint
5.
Factor 20
ef
.
A.
2
2
·
e
·
f
B.
4 · 5 ·
e
·
f
C.
2 · 2 · 5 ·
e
·
f
D.
2 · 10 ·
e
·
f
Hint