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Question 1
What is the least common multiple of 9 and 12?
A.  18 B.  45
C.  36 D.  27
Question 2
Which option shows common multiples of 15 and 20?
A.  60, 120 B.  75, 90
C.  80, 120 D.  60, 105
Question 3
What is the Least Common Multiple of 15 and 30?
A.  15 B.  45
C.  60 D.  30
Question 4
Which option shows the prime factorization of of 12?
A.  2 × 2 × 3 B.  2 × 3 × 4
C.  3 × 3 × 4 D.  2 × 2 × 2
Question 5
Which is a prime number?
A.  4 B.  5
C.  6 D.  8
Question 6
Which option shows the prime factorization of 30?
A.  2 × 2 × 5 B.  2 × 3 × 5
C.  2 × 3 × 6 D.  2 × 4 × 5
Question 7
Which number is neither a prime nor a composite number?
A.  5 B.  15
C.  1 D.  2
Question 8
Choose the CORRECT answer.
A.  3 and 6 are prime numbers B.  5 and 8 are prime numbers
C.  4 and 11 are composite numbers D.  8 and 15 are composite numbers
Question 9
Which option shows factors of 16?
A.  1, 2, 4, 8, 16 B.  1, 5, 10, 15, 20
C.  1, 3, 6, 12, 14 D.  1, 2, 5, 10, 15
Question 10
Find the GCF of 36 and 54.
A.  36 B.  18
C.  30 D.  72
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