I don’t know how hard this is going to be. Not a clue, as a matter of fact. However, I figured I’d pose the question just in case. You’ll either say, “Oh, that’s fucking easy,” or you won’t be able to figure it out, or somewhere in between.
5, 4, 2. What’s the next number in the sequence?
Ethan Abides 
It could be -1, if the pattern is increasing the subtrahend (a cool word that I just looked up) by one every time.
5-1=4
4-2=2
2-3=-1
Congratulations, that’s it. So apparently it was easy. Cool.