Explain why 7×11×13 13 and 7×6×5×4×3×2×1 5 are composite number. Solution : We have, 7×11×13 13 =13(7×11×1 1) =13×78 =13×3×2×13 Hence, it is a composite number . We have,               7×6×5×4×3×2×1 5 =5(7×6×4×3×2×1 1) =5(1008 1) =5×1009 Hence, it is a composite number . - Study24x7
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Explain why 7×11×13+13 and 7×6×5×4×3×2×1+5 are composite number. Solution : We have, 7×11×13+13 =13(7×11×1+1) =13×78 =13×3×2×13 Hence, it is a composite number . We have,               7×6×5×4×3×2×1+5 =5(7×6×4×3×2×1+1)...

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