Question

Explain why 7×9×13×15+15 is a composite number.








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Answer 1

Answer:

Composite number are the numbers which have factors other than 1 and the number itself.

Given number,

7×9×13×15+15

15(7×9×13)

Since this number have factors other than 1 and the number itself, it is a composite number.

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Answer 2

Question :

Explain why 7×9×13×15+15 is a composite number.

Answer :

7 × 9 × 13 × 15 + 15

= 15 ( 7 × 9 × 13 + 1 )

It is not a prime number because 15 is a factor of the given number.

hence it is composite number .

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