Fire Temple Notes

Under average conditions, there is a 24% chance you pull 3/3 keys in the bottom.
In lower boulder maze and map chest, 60.4% pull 2 keys in 3
In lower boulder maze, pull BK in 2 checks: (If 3 checks checked), 17.2%
In lower boulder maze pull 1 key in 2: 81.5%, pull BK in third: 11% (with a lot of assumptions)