>>19419576Well let's see, there's a 0.3% chance of getting her in any roll, right?
Then there's a 99.7% chance of not getting her, or 0.997.
0.997^280 is 0,43, so 43% chance of not getting her in 280 rolls, or 57% chance of getting her.
Let me know if I did it wrong but it feels right.