Below comes a solution of variation on problem about red and blue socks new twist on red and blue socks
The answer is four.
This is a solution for problem What Happens if an Irresistible Cannonball Hits an Immovable Post?
The given conditions of the problem are logically contradictory. It is logically impossible that there can exist both an irresistible cannonball and an immovable post. If an irresistible cannonball should exist, then by definition it would knock over any post [...]