Kwyjibo

Well, in order to guarantee a win, you need to have enough tickets to cover every set of 3. I'm using the 49 ball lotto. In order to get exactly 3 matches you need 3 balls to be among your 6 you chose and 3 from the 43 you didn't. The number of ways this can happen is C(6,3) times C(43,3). In other words 6 choose 3 times 43 choose 3. This gives 246,820 winning tickets. Since eac