Question

Explain why (7 )(11)(13)+13and (7)(6)(5)(4)(3)(2)(1)+5are composite number s

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Answer 1

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Step-by-step explanation:

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$13(7 + 11 + 1) \\ = 13(19) \\ = 247$

And

$5(7 + 6 + 1 + 4 + 3 + 2 + 1) \\ = 5(24) \\ = 120$