Your question is Probability of Ant Collisions. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
There are 3 ants on each side of a triangle. If they are all moving at the same speed, what is the probability that 2 or more ants run into each other?