There can't possible be a way, the reason being the following:公仔箱論壇1 V/ |8 B/ O" `; f" B. V% y- y
everyday the person being picked is randomly generated, that means for a person to have 99.99% chance of being picked that takes over 600 days/ o- `8 d- h0 v: P$ R5 }) G
lets just assume only 2 person in the entire group is the unlucky one, and that would case over 4 years of time just to get everybody out in the yard once公仔箱論壇5 @ Q4 Q+ f* e/ I- [7 c
any solution proposed would be statistically impossible. |