Try this mathematical film test. It's pretty cool

All the numbers equal #9

Spot on...that's magic

Hang on...

How'd you know?

This works I got my favorite, it’s like science and magic had a baby!

Amazing

I'm watching it right now!

SON OF A BITCH

Gosh danget i legit looked up and down for a minute to make sure it didnt lead to bull shiz but it out smarted me

9x+9 with x=[1,9]
All values will be a multiple of nine which, for the range given, have two digits that sum to nine.
18
27
36
45
54
63
72
81
90
Strictly speaking x could also include [0] for a result of 9

I pick 5.
5x3= 15
15+3= 18
18x3= 54
Ohhhh

I think I did something wrong course I got 12...............

Damn. Got me.

I got Shrek