first, compare 6 and another 6. they must have difference.
- D `2 [8 q2 y" W0 isecond, divide those 6 heavier one into two, each has 3. u will find difference again.
8 A' I \3 [( u- @6 ]6 k, Wthird time, if u put 2 and they are equal, u will know the different one.公仔箱論壇- V8 T# [2 A! f+ V% s
so easy.... |