first, compare 6 and another 6. they must have difference.
9 Q: q3 p7 b. I0 V* \tvb now,tvbnow,bttvbsecond, divide those 6 heavier one into two, each has 3. u will find difference again.公仔箱論壇& E/ C, {/ k, @# ]% _1 W
third time, if u put 2 and they are equal, u will know the different one.
% @2 X% B& G0 u4 i# ?3 ttvb now,tvbnow,bttvbso easy.... |