Choose two people with the same probability from the crowd and write down the reasons for the specific steps.

There are twelve constellations, and the probability that everyone is a constellation is112 (of course, this is idealized, and the number of people in each constellation is different in real life, but this question is only conceived in this way, so it can be said that this question is not rigorous and the questioner is not good). Then the probability that any two people are the same is (112).