the problem to solve is : How many routes are there from start to finish, only travelling from left to right?
I have a set of parallel lines with 7 triangles set inside. This creates 4 points across the top line and 5 lines across the bottom. the start point is at the bottom left and finish point at top right. (making only 8 of the 9 points usable..
I have concluded that there are 21 path ways to obtain this answer, but is there a formula to this question?