In most other contests you just have to say "GIVE ME! PLEASE!", but here I want to do things a bit different, not too much though.
In every contest I will give you some easy problem and you need to write a comment containing the solution of it.
No upvote/resteem/follow/… required, although that would increase the chance that I will keep up this contest.
I will give away 1 SBI after 48 hours to a random comment containing the correct solution.
Here is a math problem that had no solution for centuries, but now contains a very easy solution:
x² = -1