Divide the 12 balls into 4 groups of 3's. 9 S7 O+ \( B, [公仔箱論壇Weigh group 1 & 2公仔箱論壇5 f; q# }! i$ {# D9 D ~# p
then weigh group 2 & 3 T$ z$ U$ E& ?7 M$ t& s0 Btvb now,tvbnow,bttvbIf the results are Equal & Equal, it means the ball with the different weight is in group 4.2 ~1 N" T8 I9 E9 L! A( {
If the results are Equal & Unequal, it means the ball is in group 3. 9 Q1 u: ], }. G9 f: @# s1 F- LIf the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇: F6 R) T$ ^7 J2 N9 s4 }& \
If the results are Unequal & Unequal, it means the ball is in group 2. - q, w' ~( S9 h5 g5.39.217.77# ]. U( o2 a" r1 w
Once you determine the group that contains the ball.5.39.217.779 z% F O! I1 M
Simply weigh two of the balls