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Explain why 7*11*13+13 and 7*6*5*4*3*2*1+15 are composite numbers?

Answers (1)

7x11x13+13 = 13x78

 7x6x5x4x3x2x1+15 = 15 x 337

So both are composite numbers.

Posted by

Ravindra Pindel

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