原帖由 manstein 於 2007-11-2 05:26 PM 發表 
% n8 q! z# S0 u" W. ?Assume A is correct, den B is oso correct, therefore not the rite answer# U' n7 n, C+ w1 t+ `
Assume B is correct, den assume A is lying, den the culprit is either A or D, den if D is oso lying, den the culprit is either ...  |