Here's the question you clicked on:
inkyvoyd
In how many ways can 13 be written as the sum of 4 distinct positive integers?
Order does not matter. I hate you, combinatorics.
distinct? like none of the four digits are the same?
I'm not sure actually. Is it easily possible to solve for either case? I do know that the order of the numbers does NOT matter.
A solution using Mathematica 9 is attached.