A combination challenge takes multiple other challenges and combines them. For example, this challenge combines the challenges of finding the Greatest Common Divisor (GCD) and Prime Factorization.
Which of the following stances does the community take on such challenges? Assume that you are somehow able to tell 100% that one of the parts, if posted alone, would be a duplicate or not.
- A combination challenge is duplicate if and only if all of its parts are duplicate.
- A combination challenge is duplicate if any single part is a duplicate.
- A combination challenge is duplicate if and only if that exact combination challenge has been posted before.
New users viewing this post should be aware of the following posts that attempt to formalize what it means to be a duplicate on this site. These questions and answers do not necessarily reflect my personal views. Rather, they show what the community as a whole thought at the time. As usual, swing a vote the other way if you disagree, or post your own answer.