Analysis: When sampling 10 1 person, first draw lots to eliminate one person, and then randomly select 10 person from the remaining 100 people. In the whole sampling process, everyone's chance of being drawn is equal, because everyone's chance of being eliminated is equal, so is the chance of not being eliminated equal?
Because the first elimination is by lottery, the possibility is equal for everyone, and then the probability of randomly drawing 10 is equal for everyone, so generally speaking, everyone's probability is equal, and the possibility of being drawn is equal.