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

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

Posted by Geeta Jadav 5 years, 4 months ago

CBSE > Class 10 > Science

3 answers

Geeta Jadav 5 years, 4 months ago

Bracket ke undar 1 kyo likha please tell me i am very confused in this chapter

Geeta Jadav 5 years, 4 months ago

Ye jo aapne kiya hai 5(7×6×4×3×2×1+1) usme 5 common liya to fir bracket ke undar fir se

Yogita Ingle 5 years, 4 months ago

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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