Divide the 12 balls into 4 groups of 3's. / h' q7 p. T& WWeigh group 1 & 2 % F" W6 B3 a8 _$ V( ^4 ythen weigh group 2 & 35.39.217.77:8898( F+ ?$ `* G4 G8 |& t6 S S
If the results are Equal & Equal, it means the ball with the different weight is in group 4.: n/ j3 ^* {7 A* j$ d" H L2 }$ b- t, Y
If the results are Equal & Unequal, it means the ball is in group 3.5.39.217.77:8898$ I" M4 j: V3 o: E" S: @) n2 {) Q
If the results are Unequal & Equal, it means the ball is in group 1.5.39.217.77:8898; q2 O; ?+ t2 v1 K
If the results are Unequal & Unequal, it means the ball is in group 2.5.39.217.77:8898& @! J0 R; H# ^; t3 m2 A
0 e1 N. J4 g4 ~( l1 R) |' q公仔箱論壇Once you determine the group that contains the ball.5.39.217.77:88988 _6 B, x4 B( f5 o
Simply weigh two of the balls