jeff

rational # As I remember(though long long time ago), this is a F.5 math question . haha

truth and lie Ur story is very easy wow.Can u ask something more difficult? haha Like there r at least 5 to 6 people instead of 2.

couple question This is a discrete math question wow.Need lots of space to prove. I think I did this one b4 but totally forgot everything. haha