Question

Q. 13
Explain why 7 x 11 x 13 + 13 and
7 * 6 5 x 4 * 3 * 2 x 1 + 5 are composite numbers ?
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Answer 1

Step-by-step explanation:

7×11×13+13 may be written as, i.e. 13 * (78). So other than 1 and the number itself, 13 and 78 are also the factors of the number. ... Hence its composite number. Similarly, 7×6×5×4×3×2×1+5 can be written as , i.e. 5 * (1009).

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Answer 2

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