Question

7×11×13+13is a composite number why
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Answer 1

Answer:

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Answer 2

Answer:

PROOF;

7×11×13+13

13(77+1)

13(78)

13×13×6

13²×3×2

WE have square of 13 but not the squares of 3 and 2

hence the given number is composite

HOPE IT HELPS..