Explain why 3×5×7+7 is a composite number.

1.	Explain why 3×5×7+7 is a composite number.
Answer» ✓ 3×5×7+7= 7(3×5×1+1)= 7(15+1)= 7(16)= 112It has more than two factorsi.e.1,2,4.Therefore it is a composite number.

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