It was rich enough that I thought it deserved another airing, with a largely
different set of puzzle solvers. I can't find it using search, to know for sure,
but I'm wondering whether Prime was one of the solvers last time.
For those to whom this is a new puzzle, I hope you will enjoy it.
It's simple to state, and challenging to solve.
I'm pretty poor at darts, but I managed to put three of them on the board.
Assuming my fourth dart also hits the board [circular], then
- what is the probability it will lie inside the triangle formed by the first three?
- what is the probability the four darts will not form a convex quadrilateral?