I Feel Dumb About Math When I Watch 21

Rating: 5/10 (10 April 2008)

So, even though Ebert rated this movie low, I enjoyed it for what it was. It had all the elements of the heist movie with a little after school special mixed in. 21 is not destined to be a classic movie by any means. But how can you not enjoy a movie about a group of good looking kids making loads and loads of cash? In 21, the main character is a nerdy guy who rides around on his bike with one pant leg hiked up. He hangs out with two equally nerdy guys. The three of them are designing a car that runs by itself. They hang out at bars and drool over girls.
Ben is all ready to start Harvard Medical School, if only he had enough cash. He is spotted by one of his teachers and covertly ushered to an underground room where said teacher forces the kids to play blackjack until they learn to play the game well enough to win loads of dough. They are MIT geniuses and can count cards.
On the weekends they hit Vegas and play blackjack. Then, for Ben, everything falls apart. Will it stay that way? The rules of the after school special say no. The movie was predictable and should have been forgettable if it weren't for a math problem.
I can't get this movie out of my mind because of the math problem suggested by the teacher (Kevin Spacey) towards the beginning about the 3 doors.