first, compare 6 and another 6. they must have difference.
* f7 l9 B: x5 C& s8 Ytvb now,tvbnow,bttvbsecond, divide those 6 heavier one into two, each has 3. u will find difference again.6 i/ h) @: `' ?2 q
third time, if u put 2 and they are equal, u will know the different one.tvb now,tvbnow,bttvb% Y8 {0 O# c: Q3 R; g& ^
so easy.... |