A single analysis from an individual is 1. The probability of the first lottery is 1/(n- 1).
2. The probability of being drawn for the second time. The second time.
Is to miss the first time.
(n-2)/(n- 1)* 1/(n-2)
The probability of the second lottery is also 1/(n- 1).
The probability of being drawn from the first time to the ninth time is 1/(n- 1).
Therefore, it is not wrong that the probability of each individual being drawn after the second time is 9/(n- 1).