gigastasioI've had this puzzle on my phone for years. Every few months I'd glance at it and try and solve it. Last night, as I was eating dinner, I finally figured out the answer!
I've had this puzzle on my phone for years. Every few months I'd glance at it and try and solve it. Last night, as I was eating dinner, I finally figured out the answer!
No, the ?=15
The right-hand number minus the left-hand number equals the lower number: 99-72=27 Therefore 36-21=15
Sunkblake