Explainwhy(7X13X11)+11and(7X6X5X4X3X2X1)+3arecomposite numbers.

1 thought on “Explainwhy(7X13X11)+11and(7X6X5X4X3X2X1)+3arecomposite numbers.”

1. Answer:

   Given 7×11×13+13

   =13×(7×11+1)=3×78

   This number is multiple of two integers.Hence it has more than two factors.Hence it is a composite number.

   similarly in

   7×6×5×4×3 ×2×1+5

   =5(7×6×4×3 ×2×1+1)=5×1009

   This number is multiple of two integers.Hence it has more than two factors.Hence it is a composite number.

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