Question

9x11x13 +13 ecplain that it is a composite​

Answer 1

Question:-

Show that $9 \times 11 \times 13 + 13$ is a composite number

Solution:-

$9 \times 11 \times 13 + 13$

$= 13(9 \times \times 11 \times 1 + 1)$

$= 13(99 + 1)$

$= 13(100)$

$= 13(2 \times 2 \times 5 \times 5)$

It is expressed as product of primes. So, it is a Composite number

So, It is a composite number