Question

20570
58500 iii) 45470971
Explain why 7x11x 13 + 13 and 7 x6x5 x 4x3x2x1 + 5 are composite numbers.
al number n. INCERT) ?​

Answer 1

Answer:

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Step-by-step explanation:

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