The chances of winning the lottery if you play every week are better than a player who plays once a month. But, they are definitely worse than the chances of a player who plays the same amount as you but plays every day. In a 5/35 lottery game, the odds of winning for any particular week of playing are 1 in 324,632. If you play for two weeks, then your odds are reduced to 1 in 162,316. If you play for three weeks the odds are reduced to 1 in 108,210.7. Playing this way for one year gives you odds 1 in (324,632)/52 or 1 in 6242.9 of winning the lottery. These odds are just a very close approximation to the real odds. The precise odds require more complicated mathematics.