1. The Birthday Problem

What is the probability that, in a room with "n" people, at least two will have the same birthday.

2. Probability Game

I don't know of a great one, but I was thinking about using a "game" to drive our investigation (something like Pig...but preferably more complex)

3. Sports

What is the probability that Team X will make it to the NBA Finals (or something along those lines)

4. Insurance Pricing

Is insurance pricing fair?

The only thing that I really DON'T want to do is Casino/Gambling stuff. Other than that, any suggestion for a unit question is fair game...

p.s. I'm really tempted to create a tab where "we" can start to organize unit questions for reference. Good idea?