Question 1072906
Let's look at the possibility of NOT being chosen. That would be (8/9)^3, since the lottery is being held for three weeks. This amounts to 0.702331961591220850480109739369. Now we take this and subtract it from 1, which gives us 0.297668038408779149519890260631, or a 29.7668% chance of being picked at least once. ☺☺☺☺