Do you know what it means when you put an exclamation point after a number? It means that number times one times two times three and so on, all the way up to the number you started with. Like this:

4! = 1 x 2 x 3 x 4 = 24
6! = 1 x 2 x 3 x 4 x 5 x 6 = 720

So what does "0!" equal? Zero, right? Wrong, it equals 1. Why? Because math is bullshit. You know what else is bullshit? This awful fucking movie. It's about these mathematic geniuses who have to solve a bunch of math riddles before they get crushed in a death trap, but the actual problems are so famous and easy that it's fucking laughable. Hell, one of them was in Die Hard 3: Die Dumber, and another one was in my 8th grade algebra book. I guess they wanted to keep the puzzles simple so the audience would understand the solutions, but if you're the type of person who would sit through a movie about math problems I'm guessing you're the type of person who knows a lot about math and you'd know fuck well that these supposed brainiac nerds wouldn't need two seconds to solve this idiot tripe. Of course the movie also throws in a few plot twists while it's stumbling around embarrassing itself, but they're all completely ridiculous and just make the whole thing doubly retarded. I mean really, poison gas in the seatbelt buckle? Give me a fucking break. Oh, and nice (by which I mean shitty) job on that part where the cartoon car goes over the cliff. That was so fucking fake it could've been one of my girlfriend's orgasms.

I'll bet you any amount of money they pitched this movie as "a smart Saw". They should've pitched it as "a worthless piece of crap".