first, compare 6 and another 6. they must have difference.
1 F1 w1 v' |( k. a% J: n公仔箱論壇second, divide those 6 heavier one into two, each has 3. u will find difference again.tvb now,tvbnow,bttvb& c6 P/ B0 r* `9 j, I
third time, if u put 2 and they are equal, u will know the different one.
4 G# z3 M0 @$ U) Q1 sso easy.... |