Date Range
Date Range
Date Range
Retape dans le champ ci-dessous la suite de chiffres et de lettres qui apparaissent dans le cadre ci-contre.
A puzzle a day keeps rusting away. A pseudorandom collection of puzzles that stimulated my grey cells. Friday, April 3, 2015. There are N ants present on a straight line. Each ant is either facing to the left or to the right. All ants move at a constant speed. Whenever any two ants collide, both of them change the direction and continue their travel. We are interested in the total number of collisions possible.