Is it the same probability to draw first and then draw?

When drawing lots, the probability of drawing first is the same as that of drawing later. The lottery method is to number each unit in the survey population, and then randomly select the numbers until enough samples are extracted. The lottery principle comes from the total probability formula, that is, the lottery order has nothing to do with the lottery probability. If 10 draws ten lots, and four of them are difficult to draw, then the probability that everyone draws hard is 4/ 10, regardless of the drawing order.

The lottery method, also known as "lottery method", is mainly used for transactions with relatively small overall capacity. Because the lottery method is simple and easy, it is widely used.

Example of the lottery principle: for example, only 10 out of 10 million lottery tickets will be won by 10 million people. Regardless of the order, everyone's winning probability is10/100000, which means1100000.