stupid818

first, compare 6 and another 6. they must have difference. 2 e6 X( |! }. Z8 x; t
second, divide those 6 heavier one into two, each has 3. u will find difference again.公仔箱論壇, r! r0 w% G4 Y, F
third time, if u put 2 and they are equal, u will know the different one.
. S0 X- C$ f! Q. J" {, ?' w/ B公仔箱論壇so easy....