Question

hay plz solve my problem
1) Explain 7*11*13+13 is a composite number ​

Answer 1

Answer:

7 x 11 x 13 x + 13

13 ( 7x 11x 1 + 1)

13 (78)

13 ( 2 x 3 x 13) ( product of primes)

Hence it is a composite number.

Hope it helps u!!

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