What are the chances of winning the prize?

The winning probability is the number of winners divided by the total number of people who participate in the lucky draw, and the result is the winning probability. If 800 people participate in the lucky draw and there are 5 prizes, the winning probability is: 5/800=0.625%.

The lottery game has the lowest probability of winning the first prize in the domestic lottery market, with a probability of only 2 1.42 million. Secondly, the winning probability of the first prize of the two-color ball is 1.772 million.

As one of the two most popular colors in the United States, the winning probability of the first prize of Cai Zhao (Super Million) is one in 65,438+75 million, which is the most difficult lottery game in history. That is to say, the probability of winning the first prize in Cai Zhao of the United States is only 1/9.86 of that of a two-color ball.

Probability, also known as "probability", reflects the probability of random events. Random events refer to events that may or may not occur under the same conditions.

For example, it is a random event to randomly select one from a batch of goods with genuine products and defective products, and "what is extracted is genuine products". Suppose a random phenomenon is observed n times, in which event A appears m times, that is, its frequency is m/n.

After a lot of repeated experiments, m/n is often closer to a constant (see Bernoulli's law of large numbers for details). This constant is the probability of the occurrence of event A, and is often used as p.

(a) indicate.