Math NO 6.1.1.5

16. What is the prime factorization of 84?
A. 2 × 2 × 3 × 7
B. 7 × 12
C. 4 × 21
D. 2 × 2 × 3 × 3 × 7
17. Fill in the blanks to complete the prime factorization of 490: ___*___*___*___
 
 
18. Which of the following is the correct prime factorization of 270?
A. 32 × 5 × 2
B. 3 × 9 × 5 × 2
C. 33 × 5 × 2
D. 3 × 9 × 10
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