Originally Posted by Flan

It's 12.5% per unit sent that way to be sent the correct way past the 3 gates 1/2 x 1/2 x 1/2 = 1/8 = 12.5, but you can garuantee 2 units get sent that way since you need at least one unit for the other route and considering

Mmm hmm. That second unit was the reason why I said it was about 17%, though if I'm doing my math properly, I think it's actually 18.75% when you overlap the chances of 2 units?

It's been like nearly ten years since my algebra class, so I'm forgetting my order of operations (it's also why I'm fuzzy with 10-5's chances; it should be 6.25% or lower, but with the overlaps, I just said screw it, it's 10%, give or take )