Question

Check if 19×29×39+39 is a composite number

Answer 1

Yes, the step as follows:

=19×29×39+39

=39(19×29×1+1)

=39(19×29+1)

=21528

it is a composite number because the end or unit digit is 8 and it's composite so that's why we can say that it is composite number.

Hope it will help