first, compare 6 and another 6. they must have difference.
, z! ]. G& e4 a6 I0 R( y公仔箱論壇second, divide those 6 heavier one into two, each has 3. u will find difference again.
/ d4 M0 P2 Z/ ~, X2 n% I& q1 A公仔箱論壇third time, if u put 2 and they are equal, u will know the different one.
6 Z$ X" f, b1 z1 J/ Eso easy.... |