Ok this is really simple, need to know how many numbers would be missing from 0 to 999 counting by 3, for example 0,3,6,9,12. It's been awhile since I did this and I forget the equation (15 years since basic math haha).
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.