1.Which is a composite number?
a.99 b.53 c.57 d.61
2.What is the greatest common factor of 14 and 28?
a.7 b.9 c.14 d.28
3.How is 48 written as a product of its prime factors?
a.2×2×2×6 b.2×2×2×2×2×3 c.2×3×6 d.6×8

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