Question

why is 5x7xll+7 a composite number​

Answer 1

Answer:

5×7×11+7=7(5×11+1)

→7(55+1)

→7×56

Since it has more than two factors so it is composite number.

Answer 2

Answer:

5×7×11 +7

= 385 + 7

= 392. ,which is divisible by 2,4, etc.

Composite numbers are those which are divisible by other mumbers.

So , as 392 is a composite number, 5×7×11+7 is also a composite number.

Hope it helps u ...

Thank you.,.