(1) The Daily Keno drawing shall be held once a day, seven days per week, except that the director may change the drawing schedule or cancel the drawing on a holiday.

(2) The drawing will be conducted by lottery officials.

(3) Each drawing shall determine, at random, twenty winning numbers. Any drawn numbers will not be declared winning numbers until the drawing is certified by the lottery. The winning numbers shall be used in determining all Daily Keno winners for that drawing. If a drawing is not certified, another drawing will be conducted to determine actual winners.

(4) The drawing shall not be invalidated based on the liability of the lottery.