Why draw the serial number first when drawing lots?

Are you playing with a doll? Do you want to draw the serial number first, then the serial number, then the serial number, and then the serial number? ...

In fact, if you know something about mathematics, the probability of drawing first is the same as that of drawing later. For example, 10 people draw 10, and the winner is 1. If you draw first, the probability that you draw 1 is110. This is self-evident. If you draw second, you must draw without the first person. This probability is 1-110 = 9/ 10, and then take out1from the remaining 9, which is 1/9, so the probability that you take out1is 9/.