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Explain why 7×11×13+13 and7×6×5×4×3×2×1+5 |
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Answer» a))Take 13 as common in 7×11×13+13=13(7×11+1)=13×78=13×13×6So it has more than 2 factor so it is a composite number.b))Take 5 as common in 7×6×5×4×3×2×1+5=5(7×6×4×3×2+1+1)=5(1008+1)=5×1009Therefor it has more than 2 factor . so it is a composite number. Firstly take 13 common and second 5 solve their equation |
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