Are you sure the 10% chance isn't standing out more in your memory? It would be interesting to measure this over hundreds of guesses. It seems likely that the

Are you sure the 10% chance isn't standing out more in your memory? It would be interesting to measure this over hundreds of guesses. It seems likely that the probability of guessing correctly would be around 1/9, since people rarely pick the same number, but is a sustained 1/8 or better really possible?