The image is a little bit confusing. But the pattern is supposed to be 2 > 4 > 6 > 8 > 10 (the answer) > 12 circles
This one really had me scratching my head. I noticed that the bottom circle of each column is only completely filled or completely empty. What puzzles me is the fact that a column seems to be affected by the previous and the next column?
Any thoughts and theories are welcome.