Answer :

750 is not a prime number

Hope to help
:D
AL2006

WelI I don't know.  Let's see.

Every number has 2 factors . . . itself and  1 .
If those are the only factors it has, then it's a prime number.
If it has any other factors besides those, then it's a composite number.

The factors of  750  are

          1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 125, 150, 250, 375, and 750.

Besides itself and  1, it has  14  other factors.
So I guess  750  must be a composite number.