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Explain why 7×11×13 +13 and 7×6×5×4×3×2×1+5 …

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Explain why 7×11×13 +13 and 7×6×5×4×3×2×1+5 are composite number.

Posted by Poonam Mahato 6 years, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

Killer Theorem 6 years, 3 months ago

because this number can be written in the form of more than 2 factors

1Thank You

Manish Singh 6 years, 3 months ago

7*11*13+13 13(7*11+1) 13*78 13*13*2*3 Therefore, 7*11*13+13 is composite number 7*6*5*4*3*2*1+5 5(7*6*4*3*2*1+1) 5(1009) 5*1009*1 Therefore, 5*1009*1 is composite number.

2Thank You

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Don't post personal information, mobile numbers and other details.
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Posted by Kanika . 1 month ago

CBSE > Class 10 > Mathematics