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Background of the emergence of 567
In the welfare lottery, the numbers 5, 6 and 7 appear randomly.

The number of each lottery ticket is generated independently, and there is no correlation between the appearance of the numbers before and after. The probability of each number is equal, whether it is 5, 6, 7 or other numbers. The numbers of welfare lottery tickets are randomly selected and generated. Usually, electronic devices or physical devices are used to shake the numbers.

Every lottery is an independent result, and the appearance of 5, 6 and 7 in the previous period will not affect the result of the latter period. The lottery process and results completely follow the principle of probability distribution, which ensures the randomness and fairness of the results.

Therefore, when analyzing the context of the three numbers 5, 6 and 7 in the welfare lottery, we can't rely on the results of the previous period or the next period, because each number is independent of each other. Whether it is a serial number or a duplicate number, the probability and probability of winning each prize are equal.

The characteristics of welfare lottery:

1. Public welfare nature: part of the sales revenue of welfare lottery tickets is used for public welfare undertakings, such as social welfare, poverty alleviation, education, medical care and other fields, and contributes to social public welfare undertakings.

2. Legal compliance: The issuance and sale of welfare lottery tickets must comply with relevant lottery laws and regulations, and be approved and supervised by the government.

3, a variety of ways to play: Welfare lottery usually provides a variety of different ways to play, such as fonts, keno, lottery and so on. , players can buy according to their own preferences and choices.

4. Winning probability: Welfare lottery usually has multiple winning levels, including not only the first prize, but also the second prize and the third prize, which increases the winning probability and suspense.

Reference to the above content: Baidu Encyclopedia-China Welfare Lottery