first, compare 6 and another 6. they must have difference.
5 W8 p, `; \+ k* W* [* o0 ?( Asecond, divide those 6 heavier one into two, each has 3. u will find difference again.公仔箱論壇" L) y9 [6 N) R! t9 V5 y) ?, v. }
third time, if u put 2 and they are equal, u will know the different one.公仔箱論壇0 y H5 p& q1 |+ ^
so easy.... |