[Hitchhiker 42]

I ran the Monte Carlo thing in a python script and the answers, each run with 1,000,000 trials, were all around 0.333. I'm gonna keep thinking, though, how to get an exact answer.

Originally Posted by Ether

Your script has an error.

Compare it to the one-line AWK script I posted.

EDIT: I found the error - the value comes out to 0.521