How many issues does the two-color ball open in a month?

Usually, lottery tickets will be held on Tuesdays, Thursdays and Sundays during 15. If each issue is invested in 6 yuan for 4 weeks, it will cost 18 yuan per week, which is about 72 yuan, not 80 yuan. The two-color ball draws more than 150 in a year. The two-color ball will be drawn by the lottery center, and it will be drawn on China Education Television 1 channel (CETV- 1) every Tuesday, Thursday and Sunday, and the drawing time will be 2 1. Before each lottery, the sales data will be stamped by notaries, and then the lottery number will be determined by the lottery machine under their supervision. When drawing a lottery, shake out six red ball numbers first, and then shake out 1 blue ball number. After each lottery, the Welfare Lottery Center and the provincial lottery institutions shall announce the lottery number, the current total sales, the winning situation of each prize level and the fund balance of the prize pool to the public, and notify the sales outlets of the lottery results.

1. Buyers can choose double betting. Double betting means that the number of selected numbers exceeds the number of single betting, and the selected numbers can be combined into multiple lottery bets for each single betting method. The specific provisions are as follows:

(1) Red-ball multi-number: refers to the betting that more than 7 numbers (including 7 numbers) are selected from red-ball numbers and 1 number is selected from blue-ball numbers to form multiple betting numbers; (2) Multi-number of blue ball: refers to the bet that six numbers are selected from the red ball and two or more numbers (including two numbers) are selected from the blue ball to form a multi-bet betting number; (3) Full-duplex: refers to the betting that more than 7 numbers (including 7 numbers) are selected from the red ball number and more than 2 numbers (including 2 numbers) are selected from the blue ball number to form a multiple betting single betting number.

2. When the funds in the prize pool are less than 65.438+0 billion yuan, the total bonus is the sum of 75% of the current high bonus and the accumulated funds in the prize pool, and the single-note bonus is divided equally according to the notes, and the maximum amount of single-note is 5 million yuan. When the prize pool funds are higher than 65.438 billion yuan (inclusive), the total bonus consists of two parts, one of which is 55% of the sum of the current high-grade bonus and the accumulated funds of the prize pool, and the single-note bonus is divided equally according to the notes, with the maximum amount of single-note capped at 5 million yuan; The other part is 20% of the high bonus in the current period, and the single-note bonus is divided equally, and the upper limit of the single-note amount is 5 million yuan.