This is another number puzzle, On 100 floors 81 we have to realize the level number. and find the right numbers that is shown on door with simple math operation.

100 floors 81
The number you must to find is 81 which is this level number
and 81 = 9 x 9, so the answer steps for
floor 81 100 floors
- Tilt or Flip your gadget 180 degree until the upside down.
- tap symbol 9
- tap icon X
- tap symbol 9
- finally tap icon =
That's guide for 100 floors 81 game, go to next answer floor82
