Who Goes First?

I was at a software development training camp when, at the day of presentation, I was asked to randomly choose which group to present first. There were 12 groups.

I put this in irb (the interactive Ruby interpreter).

irb> (1..12).to_a.shuffle
 => [9, 6, 4, 12, 7, 3, 5, 10, 2, 1, 11, 8]