What are the chances of winning the lottery first and then winning?

When drawing lots, the chances of winning are equal to those of drawing lots later.

Draw first and then draw, and the chances of winning the lottery are equal. No matter how you draw lots, the final result is nothing more than the arrangement and combination of n lots. Whoever draws lots first is fair. No matter how these people draw lots, the final result is nothing more than the arrangement and combination of n lots. In this arrangement, no position is more special than other positions, so the possibility of winning the ticket in each position must be equal.

We randomly select two tags from n tags, and there are n(n- 1) methods, which is our total sample space. In these arrangements, the second person is guaranteed to win the prize, and he has M lottery ways. In this way, the first person can choose from the remaining n- 1, and then there are m(n- 1) ways to ensure that the second person can draw. Therefore, the "probability of the second person drawing" is m(n- 1)/n(n- 1), which is still equal to m/n.

Draw order

Lottery, also called random lottery or orderly lottery, is an objective and unbiased lottery method, which can play an important role in probability problems. Lottery originated in ancient China, from activities such as fetching rice in baskets. At first, it was mainly used for decision-making, judgment and decision-making to solve problems that cannot be accurately judged and complex social problems.

The fairness principle of lottery is a basic principle in probability theory, that is to say, the number drawn should be the same as everyone's chance value, no matter what number anyone draws. This also means that lottery tickets should not be influenced by any aspects, such as established social relations, historical feelings, any religious beliefs and so on.