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Directions: Tell whether each is a prime factorization. Write YES or NO in the
blank.
___________1. 3 x 2 x 9 x 5
___________2. 2 x 2 x 3 x 7
___________3. 5 x 7 x 3 x 2
___________4. 7 x 2 x 12 x 3
___________5. 3 x 2 x 7 x 2
___________6. 3 x 5 x 2 x 13
___________7. 5 x 3 x 21
___________8. 7 x 3 x 5 x 11
___________9. 2 x 5 x 4 x 2
___________10. 3 x 7 x 31 x 5

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